Музыкальный фильтр

Система озвучения помещений

Использование: в области радиотехники , в частности в системах озвучения залов. Сущность изобретения: система содержит один передний громкоговоритель и две цепочки боковых громкоговорителей, причем передний громкоговоритель выполнен низкочастотным , боковые - выполнены средне- высокочастотными, в систему введены линии задержки в количестве, равном одной линии задержки на одну или несколько соседних пар боковых громкоговорителей. 1 ил.

Passive diplexer

Passive diplexer for loudspeakers having at least one frequency-range capacitor, there being connected in parallel with the frequency-range capacitor (C1, C2) an acceleration capacitor (C16 and C25 respectively) and at least one filling capacitor (C12 to C15 and C21 to C24 respectively) and the acceleration capacitor (C16 and C25) having a significantly smaller capacitance than the frequency-range capacitor (C1 and C2) and the capacitance of each filling capacitor (C11 to C15 and C21 to C24) lying between the capacitances of the two other capacitors. ...

Lautsprecher mit integriertem Kondensator

Loudspeaker crossover method for dividing signal into frequency bands

The original signal (1) is filtered in an electrical high-pass filter (2) and this forms with a delay unit (4) the high-pass channel, giving an output signal (5) with a negative sign to the adding point (12). Also the undelayed (3) and also the delayed high-pass signal (5) serve to control a tweeter or another filter. An equaliser circuit (7) or (8) is added to improve the characteristics of any loudspeaker, while the low-pass channel is formed by the additional low-pass filter (6) and the equaliser circuit (9) to correct undesirable characteristics.

ULTRA HIGH LOUDSPEAKER SYSTEM

Improvements in arrangements for converting sound waves into electrical energy

... 310,519. Dominion Gramophone Records (Foreign & Colonial), Ltd., (Assignees of Merkel, A., and Halpenny, R. R.). April 28, 1928, [Convention date]. Electric circuit arrangements for amplifying sound currents.-A moving-armature pick-up has a plurality of coils, responsive to different frequency ranges, connected to one or more amplifiers and loud-speakers in such a way that the whole frequency range is reproduced. The moving-armature 2 is surrounded by coils 5, 6 connected in circuits 11, 17 comprising respectively variable resistances 7, 13, variable condensers 8, 14 and the primaries of transformers 10, 16 'which feed amplifiers 12, 18 and loudspeakers 19, 20 respectively, the circuits being tuned by the condensers, and their resonance peaks broadened by the resistances. The loudspeakers may respond equally to all frequencies, or to a band of frequencies suited to the input currents, or a single loud-speaker having a double coil unit may replace the two. Alternatively, a single amplifier ...

A loudspeaker system

The system has at least two loudspeakers, intended for high-quality sound reproduction, mainly in the region of consumer electronics. The input signal on the input terminal (1) is amplified by a comparison amplifier (3) and applied to the input of a passive crossover (6). Thereafter it is divided by means of the passive crossover (6) into respective frequency bands and applied to the input terminals of the respective loudspeakers (9, 10). The voltages on the input terminals of the loudspeakers are attenuated by the corresponding attenuation-correcting tripoles (12, 15) and applied to the second input of the comparison amplifier. By a complementary attenuation-correcting tripole (18), auxiliary negative feedback is introduced in the frequency region above the acoustic band.

Audio speaker crossover having two or more filter housings

A crossover assembly is, provided for connection in an audio system including an amplifier and two or more transducers. The crossover assembly includes a tweeter filter assembly and a woofer filter assembly. The tweeter filter assembly includes a tweeter filter housing, a tweeter filter mounted in the tweeter filter housing, an input port, an output port and a first mechanical connector. The woofer filter assembly includes a woofer filter housing, a woofer filter mounted in the woofer filter housing, an input port, an output port and a second mechanical connector The tweeter and woofer filter assemblies are dockable by interengaging the first and second mechanical connectors and are separable by disengaging the first and second mechanical connectors.

ULTRA HIGH RESOLUTION LOUDSPEAKER SYSTEM

VOLTAGE-SHARING LOUDSPEAKER CROSSOVERS

Improved means for reproducing sound

... 215,104. Round, H. J. Feb. 5, 1923. Adjusting relative strength of different ranges of speech frequencies; magnetic instruments.- For transmitting or reproducing sound a number of magnetic, electrostatic, piezo-electric or other telephones with differently tuned diaphragms are connected in series with a variable shunt across each instrument. A suitable form of magnetophone is shown in Fig. 2 in which a central core F carries a magnetizing coil H and a line coil G, the magnetic circuit being completed through the diaphragm E and the case D. Adjustable rubber pads J are arranged adjacent the diaphragm. The diaphragms of different pitches may be constructed of iron of different thicknesses. A very good reproduction of the human voice is stated to be obtained by using two diaphragms tuned to frequencies of 6000 and 600, and for the reproduction of music in which bass is present five diaphragms are used tuned to frequencies of 200,. 500, 900, 2000, and 8000. Where sufficient mechanical damping ...

SIGNAL ROUTING FOR DECREASED CURRENT CONSUMPTION IN A CONFERENCE SYSTEM

LOUDSPEAKER COMBINATION

CONDENSER LOTS FREQUENCY SWITCH FOR ELECTRICAL ACOUSTIC LOUDSPEAKERS

AKUSTISCHES GERÄT

LOUDSPEAKER WITH SHAPED SOUND FIELD

Acoustic device

Complementary transfer function design of crossover filters in loudspeaker systems

LOUDSPEAKER SYSTEM WITH BOUNDARY LAYER CONTROL

LOUDSPEAKER SYSTEM

The present invention provides a loudspeaker system with a plurality of direct loudspeakers mounted on an enclosure front for radiating in a forward direction and at least one compensation loudspeaker for each loudspeaker. The compensation speakers are mounted to direct sounds rearwardly so that both the sound pressure as a result of the direct sounds and the sound pressure as a sum of the direct and indirect sounds are substantially independent of frequency.

MOTION PICTURE THEATER LOUDSPEAKER SYSTEM

LOUDSPEAKER SYSTEM WITH BROAD IMAGE SOURCE

Lautsprecheranlage mit elektrostatischen Lautsprecherelementen.

Dispositif amplificateur.

Verfahren zum Betrieb mehrerer Lautsprecher.

BREITBAND-SCHALLSTRAHLER.

Frequenzweiche

Measuring apparatus and method

A sound measuring apparatus includes an impulse response obtaining section obtaining an impulse response, a positive transform section performing a positive transform on the impulse response obtained by the impulse response obtaining section, a filter low-pass filtering the response waveform on which the positive transform was performed by the positive transform section, a frequency characteristic obtaining section obtaining a frequency characteristic of the impulse response obtained by the impulse response obtaining section, a filter characteristic setting section setting a filter characteristic of the low-pass filter so as to be variable depending upon the frequency characteristic obtained by the frequency characteristic obtaining section, and a measurement result obtaining section obtaining a measurement result about a predetermined measurement item based on the waveform obtained by the low-pass filter.

Parameter display controller

Improvements with the devices of coupling of several loudspeakers

Amplifying assembly

Arrangement for uniform electrical sound transmission

Improvements with the receiving systems of complex electric currents

Loudspeaker casing with baffles holding two units - has closed, common cavity and open tuned cavity transmitting low frequency tones

HEADPHONE APPARATUS AND METHOD FOR PROVIDING DYNAMIC SOUND HAVING VIBRATION

PURPOSE: A headphone providing a dynamic stereo sound with vibrations is provided which can be put on or take off without removing a user's hat and deliver dynamic sound effect to its user. CONSTITUTION: A headphone(10) has a pair of sound generating units(16) designed to be placed adjacent to user's ears, and a vibration generating unit(14) designed to be placed at the back of the user's neck. The sound generating units generate an acoustic sound in accordance with an audio signal and then transmit it to the ears. Simultaneously, the vibration generating unit generates vibration supplied to the back of the user's neck in accordance with the audio signal. Then, the user senses the acoustic sound through his ears and simultaneously senses the vibration through the back of his neck. By doing so, dynamic sound effect can be delivered to the user. COPYRIGHT 2000 KIPO ...

VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDERING USING UPWARD FIRING DRIVERS

Embodiments are directed to speakers and circuits that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. The speaker comprises upward firing drivers to reflect sound off of the upper surface and represents a virtual height speaker. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the upward-firing driver.

ACOUSTIC DEVICES

L'invention concerne un procédé permettant de réduire les phénomènes intervenant à des fréquences particulières comme les coïncidences. Un panneau (11) comprend des excitateurs (13, 15), disposés pour réduire le phénomène, qui peuvent être attaqués en phase mais qui sont espacés d'une distance sensiblement égale à la moitié de la longueur d'onde des ondes de flexion dans le panneau à la fréquence particulière considérée.

Passive and Active Virtual Height Filter Systems for Upward Firing Drivers

Embodiments are directed to a virtual height filter for use with or in an upward-firing speaker system that reflects sound off a ceiling to a listening location at a distance from a speaker, and that provides height cues to reproduce audio objects that have overhead audio components. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter is provided by any one or combination of analog or digital filter circuits, or mechanical structures including speaker grill, enclosure, or driver design or configuration.

Capacitor-less crossover network for electro-acoustic loudspeakers

A crossover network for partitioning by frequency an electrical audio signal from an amplifier into a plurality of frequency bands, namely a high frequency band, and a low frequency band, and alternatively a high frequency band, a mid-range frequency band, and a low frequency band. The crossover network is implemented in a simplified configuration without the required use of capacitors and in a series configuration which reduces cost and component matching complexity. In one embodiment, the high frequency driver is configured in shunt with an inductor with a resistive component connected at least partially in shunt with the low frequency driver. This crossover network provides improved performance and simplified crossover network implementation.

Loudspeaker systems

A loud speaker system comprising a first and a second main driver connected to common signal input terminals through crossover network means designed so as to pass signals of frequencies lower than a predetermined crossover frequency to said first driver and signals of frequencies higher than said crossover frequency to the said second driver, while in a crossover frequency range the signals are passed to both drivers with an amplitude which for increasing frequencies is decreasing for said first driver and increasing for said second driver in such a manner that the transfer function of the loud speaker system is approximated to a constant function inside and outside said crossover frequency range, and further comprising an auxiliary driver designed to work in said crossover frequency range and fed through filter means so as to have a transfer function which is substantially complementary of the deviation of the combined transfer function of the two main drivers from the constant function ...

3D RECORDING AND PLAYING METHOD AND LAPTOP WITH FUNCTION OF 3D RECORDING AND PLAYING

A 3D recording and playing method is applied to a laptop which has sound receiving elements and two audio output elements. The 3D recording and playing method comprises receiving input signals by the sound receiving elements, localizing and separating the input signals so as to obtain preliminarily processed signals, filtering each of the preliminarily processed signal using a head related transfer function to generate a left channel signal and a right channel signal, generating a left channel signal set according to the left channel signal corresponding to each of the preliminarily processed signals, and generating a right channel signal set according to the right channel signal corresponding to each of the preliminarily processed signals, and outputting the left channel signal set and the right channel signal set by the two audio output elements respectively.

Single loud speaker drive system

A single speaker driver circuit having, a low frequency input coil connected between an audio circuit output and the input of the speaker, a low frequency return coil, connected between the return of the speaker and the return of the audio signal, the low frequency return coil being bifilar wound with the low frequency input coil, and a higher frequency input coil connected between the audio circuit output and the return of the audio circuit, and a secondary coil connected between the input of the speaker, and ground, the higher frequency input coil and the secondary coil being bifilar wound with one another.

Audio system for vehicular application

An audio processing module (20) capable of virtually infinite segmentation of the audio frequency spectrum. The module (20) comprises a first submodule (22), a second submodule (24) and a subwoofer module (28). The first and second submodules (22, 24) are substantially identical, each containing a high pass signal path (112), a high pass band signal path (114) and a low pass band channel (116). A mixed input/output port (29) provides a means for serial chaining of multiple modules.

Loudspeaker systems

A loud speaker system comprising a first and a second main driver connected to common signal input terminals through crossover network means designed so as to pass signals of frequencies lower than a predetermined crossover frequency to said first driver and signals of frequencies higher than said crossover frequency to the said second driver, while in a crossover frequency range the signals are passed to both drivers with an amplitude which for increasing frequencies is decreasing for said first driver and increasing for said second driver in such a manner that the transfer function of the loud speaker system is approximated to a constant function inside and outside said crossover frequency range, and further comprising an auxiliary driver designed to work in said crossover frequency range and fed through filter means so as to have a transfer function which is substantially complementary of the deviation of the combined transfer function of the two main drivers from the constant function ...

SYSTEM AND METHOD FOR PROVIDING A SHARED AUDIO EXPERIENCE

A system and method providing a shared audio experience that include analyzing at least one audio stream that is associated with at least one application that is executed on at least one portable device. The system and method also include determining a plurality of audio elements associated with the at least one audio stream based on the analysis of the at least one audio stream. The system and method further include controlling at least one audio source to provide the shared audio experience.

Vibration and sound-making apparatus and electronic device

An electronic device includes a main body, a display disposed on the main body, and a sound-making assembly. The sound-making assembly includes a speaker box and a driving diaphragm located in the speaker box, the speaker box is disposed inside the main body or is formed using the main body and the display, where the main body includes a speaker grille corresponding to the speaker box, the driving diaphragm is fastened inside the speaker box and divides the speaker box into two sub-chambers, the speaker grille is coupled to one of the two sub-chambers, the driving diaphragm vibrates after receiving an audio signal, the driving diaphragm drives, through vibration of the driving diaphragm, air in the two sub-chambers to vibrate to make a sound, and the sound is propagated through the speaker grille.

Acoustic apparatus

AUDIO REPRODUCTION APPARATUS

PURPOSE: To make a reproduction apparatus which carriers out correction of frequency characteristics necessary at the time of reproduction of a record disc simultaneously with channel dividing, by composing a channel dividing circuit with a pair of primary treble cut-off filters having specific varying time constants. COPYRIGHT: (C)1977,JPO&Japio ...

LOUDSPEAKER SYSTEM

PURPOSE: To obtain a loudspeaker system having conversion efficiency extending a low band through high band by connecting in parallel two loudspeakers having the same lowest resonance frequency, making an input impedance of one of them low, and making an electric impedance high. CONSTITUTION: An input terminal 16 is connected to a woofer S and T connected to parallel through a low-pass filter 13, and also connected to a tweeter 14 through a high-pass filter 15. In this case, the loudspeaker S has the almost same lowest resonance frequency f0, comparing with the loudspeaker T, and has such a feature as an input impedance in the frequency f0 is low and electric impedance is high. As a result, in case of a low frequency in the vicinity of the frequency f0, large power is impressed by the loudspeaker S when it is driven by a constant-voltage amplifier. Also, in case of a higher frequency than the frequency f0, large power is impressed by the loudspeaker T whose electric- mechanical coupling ...

CHANNEL DIVIDING AMPLIFIER FOR MULTI-WAY SPEAKER DEVICE

PURPOSE: To make acoustic centers of speakers coincident with each other by inputting each signal of low and high frequency regions to a power amplifier via a constant delay type full band passing circuit. CONSTITUTION: An input signal 9 is applied to a band split circuit 6, where the signal is split into a signal 10a for a tweeter 3 by low pass filter 6b and to a signal 10b to a woofer 4. The signals 10a, 10b are applied to the constant delay type full band passing circuits 7a, 7b used as a delay circuit 7. Then, a required delay is given to correct the differnce between the acoustic centers of the speakers 3, 4. Finally, the signals are inputted to power amplifiers 8a, 8b to drive the speakers. As the constant delay type full passing circuit, a circuit connecting plural number of primary and secondary type symmetrical lattice circuits in cascade with a load resistor R is used. COPYRIGHT: (C)1984,JPO&Japio ...

ACOUSTIC DEVICE

PROBLEM TO BE SOLVED: To provide an acoustic device that allows conference participants existing around the device, particularly even the conference participants existing in directions other than in a speaker front-face direction to clearly hear conversation contents. SOLUTION: A sound signal inputted from the outside is inputted to a phase shift circuit 221, and a signal inverting circuit 222A while being inputted to the post stage (each speaker) as it is. The output signal of the phase shift circuit 221 is inputted to a signal inverting circuit 222B while being inputted to the post stage. Each of the output signals of the signal inverting circuits 222A, 222B is inputted to the post stage. The phase shift circuit 221 is composed of an FIR filter or the like so as to shift a phase of the sound signal by 90° while executing phase-shift calculation in the whole frequency band. The signal inverting circuits 222A, 222B invert the inputted signal (namely, to shift the phase of the signal by ...

Музыкальный фильтр

Изобретение относится к акустике, в частности к фильтрам для фильтрации музыкальных сигналов. Активный или пассивный четырехполюсник для фильтрации музыкальных сигналов содержит два связанных колебательных контура, один из которых последовательный, а другой параллельный, выполненные из конденсаторов и индуктивностей, или в виде гираторов, или в виде цифровых программных или аппаратных фильтров. Фильтр выполнен таким образом, что собственная резонансная частота обоих колебательных контуров много ниже нижней границы диапазона частот полезного сигнала. Технический результат – повышение качества записи и воспроизведения музыкальных фонограмм. 5 ил.

AKUSTISCHES GERÄT

LAUTSPRECHERSYSTEM

Elektrodynamischer Lautsprecher.

Hi-fi loudspeaker box - has omnidirectional characteristics produced by groups of loudspeakers in five faces

The hi-fi loudspeaker box produces omni-directional characteristics resembling those of the original sounds by direct conversion using loudspeakers for the three directions. The loudspeakers occupy the front, rear, sides and top of the loudspeaker box and are connected by active or passive coupling networks. Each face may therefore contain one or more loudspeakers arranged in line or otherwise grouped. Two such loudspeaker boxes can be used to produce stereophonic sound. The advantage of the loudspeaker box lies in its direct sound reproduction. In one embodiment the base frequency response speaker (6) is installed at the front of the box and connected to a frequency divide path.

VERBESSERUNG AN DER SCHNITTSTELLE LEISTUNGVERSTÄRKER-LAUTSPRECHERBOX

Passive vollsymmetrische Frequenzweiche für Mehrwege-Lautsprecherboxen, insbesondere Zwei- bis Fünfwege-Lautsprecherboxen

Frequenzweiche (11) für eine Mehrwege-Lautsprecherbox (10), insbesondere für eine Zwei- bis Fünf-Wege-Lautsprecherbox (10), mit einem ersten Verstärkersignal-Anschluss (1) und einem zweiten Verstärkersignal-Anschluss (2), mit mehreren Paaren von Schallwandler-Anschlüssen (3, 4, 5, 6, 7, 8), wobei jedes Paar einen ersten Schallwandler-Anschluss (3, 6, 8) und einen zweiten Schallwandler-Anschluss (4, 5, 7) umfasst, und mit einer Verschaltung der Verstärkersignal-Anschlüsse (1, 2) und Schallwandler-Anschlüsse (3, 4, 5, 6, 7, 8), wobei jeweils der erste Schallwandler-Anschluss (3, 6, 8) eines Paares mit dem ersten Verstärker-Signalanschluss (1) und der zweite Signalwandler-Anschluss (4, 5, 7) eines Paares mit dem zweiten Signalwandler-Anschluss (2) verbunden ist, dadurch gekennzeichnet, dass die Verschaltung der Verstärkersignal-Anschlüsse (1, 2) und Schallwandler-Anschlüsse (3, 4, 5, 6, 7, 8) vollsymmetrisch ausgeführt ist, so dass eine erste Hälfte (H1) der Verschaltung, umfassend den ersten ...

Method and circuit arrangement for improving the division of an electric frequency mixture among a plurality of frequency sub-bands, in particular in the case of frequency duplexers for multipath loudspeaker combinations

To improve the division of an electric frequency mixture by means of filters over a plurality of frequency sub-bands, in particular in the case of frequency duplexers for multipath loudspeaker combinations, where in particular the electric faults in the transient response caused by the filters themselves are identified in the case of pulses by comparison with the original electric signal and are distributed by a further filter stage among the frequency sub-bands in which the corresponding electro-acoustic transducers are located, in such a way that the electric faults can also be compensated in the acoustic range, multiple passes through the described single correction stage are also possible. A circuit arrangement suitable for carrying out this measure comprises a first filter stage, the combination of the frequency sub-bands in a summator, a comparator which compares the combined frequency sub-bands with the original signal and generates a composite correction signal, and also a second ...

A crossover filter

Improvements relating to loud speakers

... 317,222. Pollock, A. F., and Pollock, D. A. Aug. 7, 1928. Systems for transmitting music. - A loudspeaker c particularly responsive to the lower audio-frequencies is connected to the output a, b of an amplifier in series with a choke d which passes only the lower frequencies, and a loudspeaker e particularly responsive to the upper frequencies is connected to the output in series with a capacity f whch passes only the upper frequencies. To compensate for the relatively greater intensity of the sound produced by the loud-speaker c, two or more loud-speakers such as e, e', responsive to the upper frequencies, may be connected in parallel. The tonal characteristics of the speakers c and e, e<1> should have progressively increasing sensitivity to the lowest and highest frequencies respectively. The choke d is of small self-capacity, inductance and resistance. The condenser f tends to decrease the intensity of the usually-emphasized upper low frequencies. According to the Provisional Specification ...

LOUDSPEAKER SYSTEM

Improvements in or relating to electronic amplifying circuits

... 618,789. Loud-speaker circuits. PHILIPS LAMPS, Ltd. Aug. 14, 1946, No. 24120. Convention date, Aug. 3, 1945. [Class 40 (iv)] A system comprising loud speakers L1, L2 responsive to high- and low-frequencies respectively and arranged to present a flat impedance characteristic to the output of the valve 1 is provided with means for distorting the input to the valve to compensate for differing efficiencies of the loud-speakers. Thus, if L1 is less efficient than L2, the required distortion may be achieved by means of a resistance and inductance connected in series across the grid and cathode of the valve, or as shown, Fig. 5, by means of a negative feedback circuit comprising a resistance R1 and a condenser C1 in parallel. If L1 is more efficient than L2, the inductance is replaced by a capacity and vice versa in the above-mentioned circuits. A negative feedback circuit according to the invention for a push-pull arrangement is also ...

Multi-channel acoustic system.

In a digital channel divider 10, a plurality of filters are connected in parallel, which can set a desired transmission frequency response optionally for a digital input signal, so that signals outputted from each filter are outputted independently. In order to flatten the amplitude characteristic of an overall transmission frequency response of each channel and to obtain a linear phase frequency response, an inverse filter is used wherein a time series impulse response is calculated based on an inverse characteristic and this time series impulse response is made to be a filter factor, and this filter factor and the digital input signal are calculated by convolution operations. Use is in a multi-channel amplifier system or multi-way speaker system. ...

Audio speaker crossover having two or more filter housings

Loudspeaker crossover networks

A crossover network in a loudspeaker system shares voltage equally between separate parts (Ra, Rb) of the system and the sum of the voltages supplied to separate parts (Ra, Rb) of the system remains substantially constant in the region of the crossover frequency. Preferably a bandpass filter (C3, R1, L3) renders the input impedance substantially linear in the region of the crossover frequency. ...

MULTIUNIT LOUDSPEAKER

... 1,254,608. Cross-over networks. STANDARD TELEPHONES & CABLES Ltd. 3 April, 1969, No. 17478/69. Heading H4J. In a cross-over network an inductor 3 and a low-frequency loud-speaker unit 4 are connected in series across input terminals 1 and 2. A capacitor 5, inductor 6 and a high-frequency loud-speaker unit 7 are also connected in series across the input terminals 1 and 2. The inductor 3 has an impedance equal to that of the lowfrequency loud-speaker unit 4 at the frequency f 1 above which the unit 4 ceases to be useful. The capacitor 5 and inductor 6 resonate at a frequency f 2 above the frequency f 1 , e.g. two or three times this frequency f 1 . The capacitor 5 has an impedance equal to that of the highfrequency loud-speaker unit 7 at a frequency f 3 equal to three or five times f 2 . Above frequency f 3 the inductor 6 reduces peaks to provide a relatively flat response.

Branching Circuit for Composite Electrical Signals

... 1,154,294. Band-splitting circuits. STANDARD TELEPHONES & CABLES Ltd. 22 Feb., 1968, No. 8745/68. Heading H4J. In a circuit, Fig. 1, for splitting an input signal into two signals whose frequency bands are complementary, signals within the pass band of a filter 8 feed directly from input terminal 1 to an output terminal 9. Within this frequency range the differential amplifier 11, 12, is fed with equal and opposite inputs from phase splitter 3 and no signal is fed to output terminal 14. Outside the pass band of filter 8 the input impedance of the filter changes, unbalancing the signals fed to the differential amplifier, so that frequency components in the stop range of filter 8 appear at terminal 14. An alternative circuit is described, Fig. 2 (not shown), having two phase splitters for use with a balanced input and a balanced filter.

MULTI-WAY SPEAKER SYSTEM

... 1526344 Loudspeaker systems MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 Feb 1976 [3 March 1975] 06794/76 Heading H4J In a loudspeaker system in which a woofer 7 and tweeter 3 are fed by respective low and high pass filters, the tweeter 3 is stepped back from the woofer 7 by a distance d such that sound at a frequency f0 emitted by the woofer is 180 degrees out of phase with sound at the same frequency emitted by the tweeter at a listening area, the frequency f0 being the frequency at which the sound pressure-frequency characterisitics for the woofer and tweeter cross each other (cf. Figure 8, not shown). A squawker 5 fed by a band pass filter 4 is arranged to have its amplitude peak at said frequency f0, at which frequency sound produced thereby is arranged to be about 90 degrees out of phase with the net frequency signal produced at said listening area by the tweeter and woofer. Such an arrangement enables substantially flat sound pressure-frequency and phase-frequency characteristics to ...

LOUDSPEAKER WITH INTEGRATED CONDENSER

RECEIVER WITH SEVERAL DRIVE COILS

PORTABLE PLAYING EQUIPMENT WITH EMPHASIS OF THE BASE FREQUENCY

MULTI-PATH LOUDSPEAKER SYSTEM.

Single loudspeaker drive system and method

SPEAKER CROSSOVER NETWORKS

LOUDSPEAKER SYSTEM WITH BOUNDARY LAYER CONTROL

LOUDSPEAKER SYSTEM WITH BOUNDARY LAYER CONTROL A loudspeaker system is provided, where the construction comprises a cabinet 12 that has two drivers 14,16 mounted in the front face 18 thereof, controlled by an electronic crossover network 42. The front face of the cabinet slopes upwardly and rearwardly from bottom, 20 to top 22, generally at an angle of about 20 degrees to the vertical; it is recessed from the forward extension of the sides, top and bottom, and is covered except over the drivers, with a compressed fibrous, sound absorbing material 24. The material is compressed by the grill cloth 32 which is stretched at least across the front of the speaker. The compressed fibrous, sound absorbing material attenuates surface waves that are propagated outwardly from each of the woofer and tweeter parallel to or at a shallow angle to the front face of the cabinet, and any reflections from cabinet corners or the like are even further attenuated. Because of the sloped front face, the crossover ...

MULTI-WAY LOUDSPEAKER SYSTEM

... 20648-1387 A multi-way loudspeaker system comprising at least two series connected loudspeakers connected to a common signal input for reproducing different parts of the full frequency spectrum of an audio signal applied to the signal input and being provided with a passive dividing network including a first impedance connected in parallel to a first loudspeaker for reproducing a first part of the audio-frequency spectrum and a second impedance connected in parallel to a second loudspeaker for reproducing a second part of the audio-frequency spectrum. The loudspeaker system is provided with a compensating circuit consisting of a transformer and an impedance connected in series with the primary winding and/or the secondary winding of the transformer for compensating the current flowing through one loudspeaker of the system and being fed thereto through the loudspeaker(s) being connected in series therewith so as to increase the slope of the attenuation characteristic of one section of the ...

LOUDSPEAKER SYSTEM

LOUDSPEAKER SYSTEM

SOUND TUNING METHOD

The invention relates to a method for automated tuning of a sound system, the sound system comprising delay lines, equalizing filters, and at least two loudspeakers, the method comprising the steps of: reproducing a useful sound signal through the loudspeakers, measuring sound pressure values at at least one location, providing a target transfer function for tuning the delay lines and the equalizing filters of the sound system, the target transfer function representing a desired transfer characteristics of the sound system, adjusting the delay of the delay lines, and adjusting amplitude responses of the equalizing filters such that the actual transfer characteristics of the sound system approximates the target function.

VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDEREING USING UPWARD FIRING DRIVERS

ACOUSTIC DEVICE

Sound reproduction

A sound system (8) comprises a transducer unit (1) and a frequency mapping device (2). The transducer unit comprises an array of transducers (14). The frequency mapping device is arranged for mapping a frequency range of an audio input signal (Vin) onto a frequency at which the transducer unit has a maximum efficiency, such as a resonance frequency or the Helmholtz frequency of the transducer unit. The transducer unit (1) may comprise a dedicated transducer (13) is coupled to the frequency mapping device (2) for producing the Helmholtz frequency of the transducer unit (1). The sound system may additionally comprise a sound processing device (3) arranged for steering sound produced by the array of transducers (14).

SYSTEM MULTIPLEXING HAS LOUDSPEAKERS

HIFI COMPACT OR FLAT CABINET ASSEMBLY

Method of sound reproduction and enclosure for the purpose of implementing it for the purpose of covering a large passband and of having a low rate of distortion

SPEAKER

Twin enclosure stereophonic loudspeaker network providing depth effect - has three loudspeakers in cylindrical cabinet with central reflector structure

FITTING FOR the ASSEMBLY Of a NETWORK OF DIVISION AND SHUNTING OF FREQUENCIES IN a LOUDSPEAKER OF the COAXIAL TYPE.

Producing special monophonic sound effects - by positioning of low, intermediate and high frequency loudspeakers in room providing optimum effect over wide area

System and method for generating crosstalk-removed region in audio reproduction

ACOUSTIC DEVICE

HOGKVALITATIV KONTAKT- ELLER FLATHOGTALARLADA

DIGITAL SPEAKER SYSTEM

The present invention provides a digital speaker system capable of both improvement in playback ability and simplicity in configuration under a configuration where a plurality of speaker units are used for a single audio channel. The digital speaker system is provided with a first signal processing unit (32A) which generates a plurality of driving digital signals (SS1 to SS6) from one digital audio signal (SB1) into which an input digital audio signal (SA) is divided and a second signal processing unit (32B) which generates a single driving digital signal (SS7) from the other digital audio signal (SB2) into which the digital audio signal (SA) is divided, while the speaker unit corresponding to a single audio channel is constituted of a main speaker unit (22A) which includes a voice coil bobbin (23A) having a plurality of voice coils to which the plurality of driving digital signals (SS1 to SS6) is supplied and a sub speaker unit (22B) which includes a voice coil bobbin (23B) having a single ...

ACOUSTIC DEVICE

Provided is an acoustic device capable of allowing people located in both the front side and rear side to hear reproduced sounds over a wide frequency range. This acoustic device is provided with a flat speaker 3 for low frequency-range reproduction designed to emit sound from both the front side and the rear side of the acoustic device. The acoustic device is also provided with a first speaker 5F for middle/high frequency-range reproduction designed to emit sound in a direction in which the front face of the flat speaker 3 is oriented, and a second speaker 5R for middle/high frequency-range reproduction designed to emit sound in a direction in which the rear face of the flat speaker 3 is oriented. Preferably, the first speaker 5F is driven using a sound signal corresponding to the middle/high frequency range and a sound signal obtained by inverting the phase of this sound signal is used to drive the second speaker 5R.

COMPACT SURROUND-SOUND SYSTEM

An audio system for producing a plurality of surround-sound channels in response to an audio input signal, comprising in a single enclosure an amplifier system adapted to receive surround sound input signals and a plurality of electro-acoustic transducers arranged in part as phased array and adapted to emit surround sound based on said surround sound input signals, wherein the enclosure includes at least one left and at least one right electro-acoustic transducer and filters to divert low-frequency content of said input signals for emission through said left and right transducers.

METHOD AND APPARATUS FOR TREATING AN AUDIO SIGNAL

La présente invention concerne un procédé de traitement d'un signal audio, consistant à introduire un déphasage dans le signal audio dont la magnitude est fonction de la fréquence du signal audio. En outre, cette invention concerne un système de commande de signal mettant en oeuvre ce procédé, conçu pour un haut-parleur actif comportant au moins un transducteur son, chaque transducteur comportant un amplificateur relié directement à lui, le système de commande de signal étant situé entre une source de signaux et l'amplificateur et comprenant un dispositif de transition conçu pour fournir à l'amplificateur une partie limitée en fréquence du signal; et un dispositif de déphasage conçu pour introduire dans le signal un déphasage fonction de la fréquence avant d'introduire ce dernier dans l'amplificateur. La magnitude du déphasage est fonction de la fréquence du signal audio. En outre, ce procédé et ce système permettent d'augmenter la clarté sonore perçue par l'auditeur.

Speaker device

A speaker device includes a signal processing section and a speaker array that includes a first speaker units group and a second speaker units group. The signal processing section performs a first signal process in which sound based on an audio signal of a first channel is set to output from the first speaker units group and a first virtual focus of the sound is set to an opposite side of the speaker array opposite to a sound output direction of the first speaker units group, and sound based on an audio signal of a second channel is set to output from the second speaker units group and a second virtual focus of the sound based on the audio signal of the second channel is set to an opposite side of the speaker array opposite to a sound output direction of the second speaker units group.

Switching circuit and electronic device using the same

An electronic device includes an audio power amplifier used to output a left and a right channel audio signal, an earphone jack assembly, and a switching circuit automatically switching between a speaker mode and an earphone mode. The audio power amplifier includes a control pin enabling the audio power amplifier to be electrically connected to the speaker. The control pin activated at a low level and disabled at a high level. The switching circuit is capable of enabling the control pin to switch between the low level and the high level. The switching circuit includes a power supply, a first resistor, a second resistor, a third resistor, and a diode. The resistance of the third resistor far exceeds that of the first resistor.

Audio system, audio signal processing device and method, and program

An audio system including a first speaker and a second speaker that are arranged in front of a predetermined listening position to be substantially bilaterally symmetrical with respect to the listening position; a third speaker and a fourth speaker that are arranged in front of the predetermined listening position to be substantially bilaterally symmetrical with respect to the listening position; a first attenuator that attenuates components that are equal to or less than a predetermined first frequency of an input audio signal; and an output controller that outputs sounds that are based on the input audio signal from the first speaker and the second speaker and outputs sounds that are based on the first audio signal in which components that are equal to or less than the first frequency of the input audio signal from the third speaker and the fourth speaker.

Orientation-Responsive Acoustic Array Control

An audio device incorporates a plurality of acoustic drivers and employs them to form either a first acoustic interference array generating destructive interference in a first direction from the plurality of acoustic drivers or a second acoustic interference array generating destructive interference in a second direction from the plurality of acoustic drivers in response to the orientation of the casing of the audio device relative to the direction of the force of gravity.

Loudspeaker array system

The invention is a multi-channel loudspeaker system that provides a compact loudspeaker configuration and filter design methodology that operates in the digital signal processing domain. Further, the loudspeaker system can be designed to include drivers of various physical dimensions and can achieve prescribed constant directivity over a large area in both the vertical and horizontal planes.

Coaxial sound generating unit cartridge and a two-way earphone using the same

Provided is a two-way earphone. The present invention comprises: a main earphone body on the inside of which are respectively disposed a first sound generating unit and a second sound generating unit for generating sounds of mutually different playback audio bandwidths upon input of an electrical signal; a housing which has a first holder part where the first sound generating unit is inserted, and has a second holder part where the second sound generating unit is inserted, and also has a partition wall that is formed with at least one first sound releasing hole for releasing the sound generated from the first sound generating unit between the first holder part and the second holder part; a cap which is assembled onto the second holder part, and through which is formed at least one second sound releasing hole for releasing, to the outside, a mixed sound resulting from the intermixing of the sound released through the first sound releasing hole and the sound generated from the second sound generating unit; and a base plate for supplying a power source and an electrical signal to the first sound generating unit and the second sound generating unit.

Arranging an Audio Signal Based on the Number of Loudspeakers

An apparatus including: a router configured to route a first audio signal to a local loudspeaker apparatus; and a switch configured to route at least one further audio signal, wherein in a first mode of operation the switch is configured to route the at least one further audio signal to at least one remote loudspeaker apparatus dependent on determining the presence of at least one remote loudspeaker apparatus, and in a second mode of operation the switch is configured to route the at least one further audio signal to the local loudspeaker apparatus. 1. A method comprising:routing a first audio signal to a local loudspeaker apparatus;routing at least one further audio signal, wherein in a first mode of operation routing comprises routing the at least one further audio signal to at least one remote loudspeaker apparatus dependent on determining the presence of at least one remote loudspeaker apparatus; and in a second mode of operation routing comprises routing the at least one further audio signal to the local loudspeaker apparatus.2. The method as claimed in claim 1 , further comprising combining the first audio signal and the at least one further audio signal in the local loudspeaker apparatus in the second mode of operation.3. The method as claimed in claim 1 , further comprising filtering the first audio signal and the at least one further audio signal in the local loudspeaker apparatus in the second mode of operation.4. The method as claimed in claim 1 , further comprising amplifying the first audio signal and the at least one further audio signal in the local loudspeaker apparatus in the second mode of operation.5. The method as claimed in claim 1 , further comprising:determining the presence of at least one remote loudspeaker apparatus; andcontrolling routing at least one further audio signal to operate in the second mode on determining the presence of the at least one remote loudspeaker apparatus.6. The method as claimed in claim 1 , wherein determining the ...

WIRELESS DIGITAL TRANSMISSION SYSTEM FOR LOUDSPEAKERS

This invention relates to a wireless digital transmission system for loudspeakers comprising: compression means for the file representing the digital audio signal of the “compact disc” type, a transmission device comprising means of converting this compressed signal into a series signal moving by packets going to a modulator circuit with phase quadrature and means of transmitting the signals exiting the modulator circuit with phase quadrature to the domestic network for feeding electricity; a receiving device comprising means of connecting to this domestic network and of extracting from the feed electrical signal, by a demodulator with phase quadrature, data packets moving the digital audio signal to convert it into a parallelized digital signal sent to a decompression circuit; means of converting the decompressed digital signals into an analog signal intended to feed a loudspeaker after adequate amplification. 1. A loudspeaker system , comprising:a transmitting unit;a plurality of loudspeakers, each said loudspeaker having an individual receiving unit and an individual address associated therewith; convert output information to be transmitted into packets, the packets including digital data having been compressed, serialized, and modulated for subsequent transmission,', 'address plural different audio signals to plural different loudspeakers, and', 'transmit, over AC power lines, the packetized information including packetized data corresponding to the plural different audio signals to the plural different loudspeakers; and, 'wherein the transmitting unit is configured to receive the packetized information via their respective receiving units;', 'compare the addresses associated with the packetized information with the address associated with their respective receiving units receiving the information; and', 'when one of the addresses associated with the packetized information corresponds to the address associated with the respective receiving unit receiving the ...

ACOUSTIC SYSTEM

Positive and negative two terminals of each of a plurality of main speakers constituting an array speaker are connected to each of amplifiers. Then, the main speakers are bridge-driven. Sub-speakers interpolating the main speakers are arranged respectively between the main speakers. Then, the positive and negative terminals of each of the sub-speakers are connected respectively to the terminals of the same polarities of the adjacent two of the main speakers. One sub-speaker receives an average value of the signals provided to the adjacent two main speakers, so that the one sub-speaker interpolates the wavefronts emitted from the adjacent two main speakers. 17-. (canceled)8. An acoustic system employing an array speaker including at least three speakers , comprising:two input terminals receiving signals respectively corresponding to two second speakers adjacent to one first speaker; anda drive unit driving the two second speakers on the basis of the signals inputted through the two input terminals,wherein positive terminals provided respectively in the two second speakers are connected respectively to two positive terminals of the drive unit corresponding to the two second speakers and negative terminals provided respectively in the two second speakers are connected respectively to two negative terminals of the drive unit corresponding to the two second speakers, andwherein a positive terminal provided in the one first speaker is connected to the positive terminal provided in one second speaker and a negative terminal provided in the one first speaker is connected to the negative terminal provided in the other second speaker.9. The acoustic system according to claim 8 ,wherein the one first speaker is located at equal distances from the two second speakers.10. An acoustic system employing an array speaker including at least three speakers claim 8 , comprising:two input terminals receiving signals respectively corresponding to two second speakers adjacent to one first ...

METHOD AND APPARATUS FOR PROVIDING AUDIO FROM ONE OR MORE SPEAKERS

A method and a system for adapting the timbre of sound output at power-up/down of a media player or stereo, where the timbre adaptation is a limitation of the bandwidth of the signal or sound, which bandwidth limitation is reduced over time to eventually provide no filtering at all. 1. A method of providing audio from a stereo , TV or media player comprising one or more speakers , the method comprising:initially, when the stereo/TV/media player is turned off or powered down providing no sound from the speaker(s),after step 1. providing sound relating to a track characterized by a predetermined signal, step 2 comprising: initially providing the sound by bandwidth limiting the predetermined signal and feeding the bandwidth limited signal to the speaker(s) and subsequently feeding the predetermined signal to the speaker(s), step 2 taking between 1 and 30 seconds and being performed or initiated in connection with a start-up or power-on of the stereo/TV/media player.2. A method according to claim 1 , wherein the bandwidth limiting step comprises filtering the signal in a band pass filter.3. A method according to claim 1 , wherein the bandwidth limiting step comprises reducing frequencies of the signal having a frequency exceeding a higher threshold frequency.4. A method according to claim 3 , wherein the bandwidth limiting step comprises increasing claim 3 , during a first predetermined period of time claim 3 , the higher threshold from a first lower limit to a first upper limit.5. A method according to claim 1 , wherein the bandwidth limiting step comprises reducing frequencies of the signal having a frequency being lower than a lower threshold frequency.6. A method according to claim 5 , wherein the bandwidth limiting step comprises decreasing claim 5 , during a second predetermined period of time claim 5 , the lower threshold from a second higher limit to a second lower limit.7. A method according to claim 1 , wherein the bandwidth limiting step comprises increasing ...

Audio Apparatus and Method of Changing Sound Emission Mode

An audio apparatus includes a main body, a plurality of speakers provided in the main body, a storage section configured to store a conversion table which indicates a correspondence between postures of the main body and control contents of audio signals to be supplied to the speakers, and a control section configured to refer to the conversion table of the storage section, and control the audio signals to be supplied to the speakers in accordance with a posture of the main body. 1. An audio apparatus comprising:a main body;a plurality of speakers provided in the main body;a storage section configured to store a conversion table which indicates a correspondence between postures of the main body and control contents of audio signals to be supplied to the speakers; anda control section configured to refer to the conversion table of the storage section, and control the audio signals to be supplied to the speakers in accordance with a posture of the main body.2. The audio apparatus according to claim 1 , further comprising:a receiving section which receives posture information from an external device,wherein the control section configured to detect the posture of the main body based on the posture information received by the receiving section.3. The audio apparatus according to claim 1 , further comprising:a supply destination information receiving section that receives supply destination information indicative of supply destinations of the audio signals, from an external device,wherein the control section configured to determine the speakers of the supply destinations of the audio signals, based on the supply destination information received by the supply destination information receiving section.4. The audio apparatus according to claim 1 , wherein the control section configured to control channels of the audio signals to be supplied to the speakers.5. The audio apparatus according to claim 1 , wherein the control section configured to control bands of the audio ...

CHANNEL DIVIDER, SOUND REPRODUCING SYSTEM INCLUDING THE CHANNEL DIVIDER, AND METHOD FOR SETTING CROSSOVER FREQUENCY OF THE CHANNEL DIVIDER

A channel divider that can suitably set a crossover frequency when a biwiring-connectable multiway speaker system including network circuits are used is provided. The channel divider includes a low-pass filter LPF and a high-pass filter HPF for dividing a band of a sound signal into a first output signal and a second output signal so as to output the signals, and a control circuit for controlling the filters. The channel divider has a sound output mode in which the control circuit sets a cutoff frequency fcL of LPF to a value higher than fc by about ⅙ to 1 Oct., sets a cutoff frequency fcH of HPF to a value lower than fc by about ⅙ to 1 Oct., and outputs the first output signal and the second output signal including frequency bands fcL to fcH when any crossover frequency fc for defining the band division is specified. 1. A channel divider , comprising:a low-pass filter LPF and a high-pass filter HPF for dividing a band of an input sound signal into at least a first output signal whose frequency is lower and a second output signal whose frequency is higher than that of the first output signal and outputting them to a first output terminal and a second output terminal;a control circuit for controlling the filters; and{'b': 0', '0', '0, 'a sound output mode in which when any crossover frequency fc for defining the band division is specified, the control circuit sets a cutoff frequency fcL of the low-pass filter LPF to a value higher than the crossover frequency fc by about ⅙ to 1 Oct., and sets a cutoff frequency fcH of the high-pass filter HPF to a value lower than the crossover frequency fc by about ⅙ to 1 Oct., so as to output the first output signal and the second output signal including frequency bands fcL to fcH to the first output terminal and the second output terminal, respectively.'}2. The channel divider according to claim 1 , further comprising:a test signal generating circuit for generating a test signal including a predetermined band; anda test signal ...

METHOD AND APPARATUS FOR INFORMATION EXCHANGE BETWEEN MULTIMEDIA COMPONENTS FOR THE PURPOSE OF IMPROVING AUDIO TRANSDUCER PERFORMANCE

A system and method for utilizing a plurality of Transducer specification files (TSFs) stored in one or more TSF databases to configure a Transducer Correction Processor (TCP). An incoming audio stream from an audio signal source is provided to the TCP, with the TCP using the unique configuration of the Transducer (e.g., speaker) contained in the TSF, applies corrections to the audio stream to produce a corrected audio stream. The corrected audio stream compensates for temporal or frequency domain or other aberrations produced by the particular Transducer. Consequently, a sound field produced by the Transducer from the corrected audio stream is close to or identical to a sound field produced by a “perfect” Transducer from the incoming audio stream. 1. In a high definition audio apparatus comprising a Transducer portion and a processor portion , said processor portion comprising: a Transducer specification file (TSF) associated with said Transducer and representative of a performance characteristic thereof , a Transducer correction processor (TCP) adapted to receive an electrical signal representing an incoming audio stream , and using information from said TSF , transforming said electrical signal representing an incoming audio stream into a corrected electrical signal representing a corrected audio stream , said corrected electrical signal representing a corrected audio stream being applied to said Transducer , the improvement comprising:said Transducer comprising a Transducer ID that may be electrically read to produce a Transducer ID signal; and wherein said Transducer ID signal may be used to automatically locate a TSF specific to said Transducer generating said Transducer ID signal, and whereby said specific TSF may be used to automatically configure said TCP expressly specifically for said Transducer generating said Transducer ID signal, said TCP subsequently providing a corrected electrical signal representing a corrected audio stream specifically corrected ...

SURROUND SIGNAL GENERATING DEVICE, SURROUND SIGNAL GENERATING METHOD and SURROUND SIGNAL GENERATING PROGRAM

A surround signal generating device includes: a surround signal generating unit which subtracts a sound signal obtained by multiplying a first gain by an inputted sound signal of a right channel from an inputted sound signal of a left channel so as to generate a surround signal of the left channel, and which subtracts a sound signal obtained by multiplying a second gain by the inputted sound signal of the left channel from the inputted sound signal of the right channel so as to generate a surround signal of the right channel; and a gain setting unit which sets the first gain and the second gain so that a correlation between the surround signal of the left channel and the surround signal of the right channel which are generated by the surround signal generating unit realizes a correlation between surround signals of an actual content having a surround sound. 1. A surround signal generating device to which two-channel sound signals having a left channel and a right channel are inputted , and which generates surround signals of a left channel and a right channel at least , comprising:a surround signal generating unit which subtracts a sound signal obtained by multiplying a first gain by the inputted sound signal of the right channel from the inputted sound signal of the left channel so as to generate the surround signal of the left channel, and which subtracts a sound signal obtained by multiplying a second gain by the inputted sound signal of the left channel from the inputted sound signal of the right channel so as to generate the surround signal of the right channel; anda gain setting unit which sets the first gain and the second gain so that a correlation between the surround signal of the left channel and the surround signal of the right channel which are generated by the surround signal generating unit becomes a positive correlation.2. The surround signal generating device according to claim 1 ,wherein the gain setting unit sets the first gain and the second gain ...

APPARATUS AND METHOD FOR EDITING MULTICHANNEL AUDIO SIGNAL

An apparatus and method for generating a multichannel audio signal showing a 3-dimensional (3D) effect by editing an existing multichannel audio signal. The apparatus may include an output location determiner to determine location to output an object audio signal using editing information of the object audio signal, and a multichannel object audio signal generator to generate a multichannel object audio signal by allocating the object audio signal to channels corresponding to the location to output the object audio signal. 1. An apparatus for editing a multichannel audio signal , the apparatus comprising:an output location determiner to determine location to output an object audio signal using editing information of the object audio signal; anda multichannel object audio signal generator to generate a multichannel object audio signal by allocating the object audio signal to audio channels corresponding to the location to output the object audio signal.2. The apparatus of claim 1 , further comprising:a multichannel audio signal converter to convert a first multichannel audio signal to a second multichannel audio signal that corresponds to the multichannel object audio signal; andan audio mixer to generate a third multichannel audio signal by mixing the multichannel object audio signal with the second multichannel audio signal.3. The apparatus of claim 2 , wherein the audio mixer generates multichannel editing information comprising at least one of channel information of the third multichannel audio signal claim 2 , the editing information of the object audio signal claim 2 , channel information of the second multichannel audio signal claim 2 , and mixing information.4. The apparatus of claim 2 , wherein the multichannel audio signal converter edits at least one of channels of the first multichannel audio signal according to an editing command received from a user claim 2 , and converts the first multichannel audio signal including the edited channel into the second ...

ELECTRONIC DEVICE AND HEADSET WITH SPEAKER SEAL EVALUATION CAPABILITIES

Electronic devices and accessories for electronic devices such as headsets are provided. The electronic devices may produce audio output. The headsets may include earbuds with speakers that play the audio output for a user while the earbuds are located in the user's ears. Circuitry in an electronic device and a headset may be used in evaluating how well the earbuds are sealed to the user's ears. In response to seal quality measurements, informative messages can be generated for the user, overall earbud volume may be increased, balance adjustments may be made to correct for mismatched balance between left and right earbuds, equalization settings may be adjusted, and noise cancellation circuitry settings can be changed. Electrical impedance measurements and acoustic measurements can be used in evaluating seal quality. 1. An electronic audio device for use with an earbud having a microphone and a speaker located therein , comprising:audio processing circuitry to produce an audio signal for driving the speaker in the earbud, and to measure sound level using output from the microphone in the earbud while the speaker is being driven by the audio signal; andcontrol circuitry to evaluate a seal quality of the earbud to a user's ear based on the measured sound level at a predetermined frequency, and to then adjust equalization when driving the speaker, based on the evaluated seal quality.2. the audio device of wherein the audio signal comprises a test tone in isolation.3. The audio device of wherein the audio signal comprises a test tone combined with normal audio playback.4. The audio device of wherein the test tone is a sinusoid between about 5 Hz and less than 15 Hz.5. The audio device of wherein the audio signal comprises normal audio playback claim 1 , the control circuitry to filter the audio signal that is driving the speaker in order to determine signal strength at the predetermined frequency claim 1 , and to filter the output from the microphone at the predetermined ...

Sound system with individual playback zones

The invention relates to a sound system in a vehicle. The sound system comprises a first audio signal source providing a first audio signal and a second audio signal source providing a second audio signal. The sound system further comprises loudness determination unit is configured for determining a loudness of the first audio signal based on a psycho-acoustic model of a human hearing and a type information unit configured for establishing type information of the second audio signal. The sound system further comprises a control unit configured for individually selecting, for each of at least two playback zones, a mixing mode depending on the type of the second audio signal, wherein the mixing modes relate to a relation between signal output gains of the first and second audio signals. The control unit is further configured for individually mixing for playback, in each of the at least two playback zones, the first audio signal and the second audio signal based on the selected mixing mode and the determined loudness. The sound system further comprises a plurality of loudspeakers addressing individually the at least two playback zones.

Wireless Audio Player and Speaker System

The present disclosure relates to an audio player and speaker system, and particularly, to a wireless audio player and speaker system. More particularly, the present disclosure relates to a semi-permanent, wireless boombox-style audio player, for playing audio from an external audio source. 1. An audio playback system , comprising:a plurality of speakers configured for at least stereo sound;a short-range, wireless communication module for receiving audio data from an external media device; anda controller for directing audio for playback at the plurality of speakers based on the audio data.2. The audio playback device of claim 1 , wherein said short-range claim 1 , wireless communication module uses Bluetooth technology.3. The audio playback device of claim 2 , further comprising a selector control mechanism for selecting between an omni-directional sound image and a directional sound image.4. The audio playback device of claim 2 , wherein said external media device is a portable media player.5. The audio playback device of claim 2 , wherein said external media device is selected from the group consisting of a smartphone and a tablet computer.6. The audio playback device of claim 2 , wherein said external media device is a personal computer.7. The audio playback device of claim 3 , further comprising a subwoofer channel.8. The audio playback device of claim 2 , further comprising a port adapted to connect to an external device.9. The audio playback device of claim 8 , wherein said port is a USB port.10. The audio playback system of claim 2 , further comprising a video display.11. An audio playback system claim 2 , comprising:a plurality of speakers;a short-range, wireless communication module for receiving audio data from an external media device;a controller for receiving audio data from the communication module and directing audio for playback at the plurality of speakers based on the audio data; anda speaker/tone configuration control feature that is configured ...

OBJECT-ORIENTED AUDIO STREAMING SYSTEM

Systems and methods for providing object-oriented audio are described. Audio objects can be created by associating sound sources with attributes of those sound sources, such as location, velocity, directivity, and the like. Audio objects can be used in place of or in addition to channels to distribute sound, for example, by streaming the audio objects over a network to a client device. The objects can define their locations in space with associated two or three dimensional coordinates. The objects can be adaptively streamed to the client device based on available network or client device resources. A renderer on the client device can use the attributes of the objects to determine how to render the objects. The renderer can further adapt the playback of the objects based on information about a rendering environment of the client device. Various examples of audio object creation techniques are also described. 1. A system for adapting transmission of an object-oriented audio stream , the system comprising: channel objects, each channel object comprising a channel of audio, and', 'dynamic objects, each dynamic object comprising metadata, the metadata for each of the dynamic objects comprising object attributes; and, 'an object-oriented encoder comprising one or more processors configured to select a plurality of audio objects for transmission to the remote computer system, the plurality of audio objects comprisinga streaming module configured to provide the channel objects and the dynamic objects to the remote computer system, thereby facilitating backwards compatibility with the remote computer system if the remote computer system is a fixed channel system and enabling the remote computer system to achieve enhanced rendering if the remote computer system is capable of also rendering the dynamic objects.2. The system of claim 1 , wherein at least one of the dynamic objects comprises psychoacoustic information configured to enhance at least one of the channel objects.3. ...

AUDIO PROCESSING APPARATUS

A ZONE4 left audio signal ZL is output without releasing a connection of a surround left speaker SSL. When determining that a playback of the ZONE4 left audio signal ZL is set by a user manipulation, a controller controls switches Sand Sin an on state, and controls switches S, S, and Sin an off state. Accordingly, the ZONE4 left audio signal ZL is supplied from a DSP to an amplifier through the switch S, amplified by the amplifier , and supplied to a surround back left/ZONE4 left SP terminal through the switch S. A surround left SP terminal is an output terminal dedicated to a surround left audio signal, so that the ZONE4 left audio signal ZL can be output without releasing the connection of the surround left speaker SSL. 1. An audio processing apparatus comprising: a first amplifier that amplifies a surround audio signal or a fourth room audio signal , the surround audio signal being a surround left audio signal or a surround right audio signal , and the fourth room audio signal being a fourth room left audio signal or a fourth room right audio signal; a second amplifier; a third amplifier; a first speaker terminal that outputs the surround audio signal; a second speaker terminal that outputs a first extended audio signal or the fourth room audio signal , the first extended audio signal being a first extended left audio signal or a first extended right audio signal; a third speaker terminal that outputs a second extended audio signal or a second room audio signal , the second extended audio signal being a second extended left audio signal or a second extended right audio signal , and the second room audio signal being a second room left audio signal or a second room right audio signal; a fourth speaker terminal that outputs a third extended audio signal or a third room audio signal , the third extended audio signal being a third extended left audio signal or a third extended right audio signal , and the third room audio signal being a third room left audio signal ...

DATA PROCESSING METHOD AND ELECTRONIC DEVICE

The present invention discloses a data processing method applied in an electronic device. The electronic device includes a codec, at least two audio output devices, an identification module, a communication module and at least two players. The method comprises the steps of: decoding, by the at least two players, at least two paths of coded multi-media data containing audio data to generate at least two channels of code streams corresponding to the at least two paths of multi-media data when the electronic device is in an operating state; assigning, by the identification module, an identifier to each of the at least two channels of code streams and transmitting at least two identifiers to the communication module, the at least two identifiers being provided to the codec such that the codec can receive the at least two channels of code streams based on the at least two identifiers; and establishing, by the codec, a channel corresponding to each of the at least two channels of code streams based on the at least two identifiers, such that each channel of code stream can be output to one of the at least two audio output devices via its corresponding channel. 1. A data processing method , applied in an electronic device which comprises a codec , at least two audio output devices , an identification module , a communication module and at least two players , the method comprising:decoding, by the at least two players, at least two paths of coded multi-media data containing audio data to generate at least two channels of code streams corresponding to the at least two paths of multi-media data when the electronic device is in an operating state;assigning, by the identification module, an identifier to each of the at least two channels of code streams and transmitting at least two identifiers to the communication module, the at least two identifiers being provided to the codec such that the codec can receive the at least two channels of code streams based on the at least two ...

SYSTEM AND METHOD FOR SYNCHRONIZING OPERATIONS AMONG A PLURALITY OF INDEPENDENTLY CLOCKED DIGITAL DATA PROCESSING DEVICES

Receiving, by a first zone player, first control information from a user interface module; based on the received first control information, transmitting, by the first zone player, a notification to a second zone player, wherein the notification indicates that the first zone player is joining a synchrony group with the second zone player; receiving, by the first zone player, second control information from the second zone player, wherein the second control information comprises a multicast address that an audio information channelization device uses to broadcast audio information and playback timing information to the synchrony group; and playing, by the first zone player, the audio information in synchrony with the second zone player.

SYSTEM AND METHOD FOR INFORMATION HANDLING SYSTEM WIRELESS AUDIO DRIVEN ANTENNA

Audio information coexists with best efforts data on a wireless network, such as a wireless local area network, by defining a backoff dedicated to communicate of audio information and using undedicated resources to communicate best efforts data. The backoff has a periodic interval that corresponds to the sample rate of the audio information so that a set of audio frame slots communicated at the start of a backoff interval has a length of time to complete communication. The set of audio frame slots has, for instance, an audio frame slot for each audio endpoint interfaced with the network. Periodic backoffs ensures synchronized audio playback by dedicating an antenna to communication of audio frames at the sample rate of the audio information, while supporting best efforts network communication when audio information is not being communicated. 120-. (canceled)21. A method for communicating audio information through a wireless network , the method comprising:communicating audio frames through the wireless network to plural audio endpoints during backoffs, the plural audio endpoints presenting sounds in synchronziation with each other;restricting communication of data other than the audio frames during the backoffs;communicating data in a best efforts format outside of the backoffs; andpresenting the audio sounds synchronized at the plural audio endpoints.22. The method of wherein communicating audio frames and communicating data further comprise communicating the audio frames and data with the wireless network through a common antenna.23. The method of wherein the network comprises a wireless local area network.24. The method of wherein the network comprises a wireless personal area network.25. The method of wherein the each backoff comprises 32 bits per audio frame.26. The method of further comprising:defining a backoff for each of the plural audio endpoints; andcommunicating an audio frame through the wireless network at each backoff, each audio frame having plural ...

Controlling and manipulating groupings in a multi-zone media system

In general, techniques of controlling a plurality of multimedia players in groups are disclosed. According to one aspect of the present invention, a mechanism is provided to allow a user to group some of the players according to a theme or scene, where each of the players is located in a zone. When the scene is activated, the players in the scene react in a synchronized manner. For example, the players in the scene are all caused to play a multimedia source or music in a playlist, wherein the multimedia source may be located anywhere on a network. 1. In a network comprising a plurality of zone players , a method comprising:maintaining, by a first zone player, a zone configuration, the zone configuration characterizing one or more zone scenes created by a user, each zone scene comprising at least one zone group, each zone group including at least one of the plurality of zone players, and each zone player in the zone group configured to synchronously playback multimedia content from a multimedia source with another zone player in the zone group;transmitting, by the first zone player via a network interface, the zone configuration to a controller device;receiving, by the first zone player via the network interface, an updated zone configuration from the controller device;storing, by the first zone player, the updated zone configuration; andbased on the updated zone configuration, causing, by the first zone player, the plurality of players in the network to playback multimedia content in accordance with the updated configuration.2. The method of claim 1 , wherein the updated zone configuration comprises one or more attributes associated with the one or more zone scenes.3. The method of claim 2 , wherein the one or more attributes comprises one or more of (i) a volume level for audio playback for each zone player in the one or more zone scenes claim 2 , (ii) a mute or unmute setting for audio playback claim 2 , (iii) a selection and play of specific music claim 2 , (iv) ...

CLASS-D AMPLIFIER WITH PULSE DENSITY MODULATION OUTPUT FEEDBACK FOR HIGHER PERFORMANCE ACOUSTIC ECHO CANCELLER

A system for processing audio data comprising an amplifier configured to receive an audio signal and to perform nonlinear processing on the audio signal. An encoder coupled to the amplifier, the encoder configured to receive the nonlinearly processed audio signal and to encode the nonlinearly processed audio signal into a data transmission format. A transmitter configured to receive and transmit the encoded nonlinearly processed audio signal. A receiver configured to receive the transmitted encoded nonlinearly processed audio signal and to decode the encoded nonlinearly processed audio signal. A digital voice processor configured to receive the nonlinearly processed audio signal and to use the nonlinearly processed audio signal for echo estimation and to subsequently subtract the estimated echo signal from a microphone signal. 1. A system for processing audio data comprising:an amplifier configured to receive an audio signal and to perform nonlinear processing on the audio signal;an encoder coupled to the amplifier, the encoder configured to receive the nonlinearly processed audio signal and to encode the nonlinearly processed audio signal into a data transmission format;a transmitter configured to receive and transmit the encoded nonlinearly processed audio signal;a receiver configured to receive the transmitted encoded nonlinearly processed audio signal and to decode the encoded nonlinearly processed audio signal; anda digital voice processor configured to receive the nonlinearly processed audio signal and to use the nonlinearly processed audio signal for echo estimation at an acoustic echo cancellation module or algorithm and to subsequently subtract that estimated echo signal from a microphone signal.2. The system of wherein the encoder performs pulse density modulation encoding of the nonlinearly processed audio signal.3. The system of wherein the transmitter is one of a wire line data transmitter claim 1 , an infrared data transmitter or a wireless data ...

SYSTEM AND METHOD FOR DIRECTIONALLY RADIATING SOUND

A method of operating an audio system that provides audio radiation to a plurality of listening positions includes providing at least one source of audio signals. At each listening position, at least one array of speaker elements is provided. A filter is provided between the at least one source and at least one of the speaker elements at a first listening position. The filter is optimized so that the filter reduces acoustic energy radiated from the first array to at least one other listening position of the plurality of listening positions, compared to acoustic energy radiated from the first array to the first listening position. 1. A method of providing and operating an audio system that provides audio radiation to listening positions , the method comprising the steps of:(a) providing at least one source of audio signals;(b) providing, at each of a plurality of the listening positions, at least one array of speaker elements that receives the audio signals and responsively radiates output acoustic energy;(c) providing, at a first said at least one array of each first listening position of the plurality of listening positions, a first filter between the at least one source and at least one of the speaker elements in the first array that filters first said audio signals from the at least one source to the at least one speaker element;(d) optimizing the first filter so that the first filter reduces a magnitude of acoustic energy radiated from the first array to at least one other listening position of the plurality of listening positions, compared to a magnitude of acoustic energy radiated from the first array to the first listening position;(e) providing, between the first array at each first listening position and a second said at least one array of a second said listening position of the plurality of listening positions, a second filter between the first audio signals and the second array so that the second array receives the first audio signals through the second ...

Speaker array control method and speaker array control system

A speaker array control method includes steps of detecting a position of an audience located in front of a speaker array, wherein the speaker array includes N speakers and N is a positive integer larger than one; defining a target and a non-target with respect to an i-th speaker of the N speakers according to the position of the audience, wherein i is a positive integer smaller than or equal to N; calculating a weighting vector for the i-th speaker according to the target and the non-target; adjusting a directionality of an output signal of the i-th speaker by the weighting vector and reducing energy of a plurality of side lobes of the output signal of the i-th speaker; and controlling the i-th speaker to output the adjusted output signal when the energy of each of the side lobes is smaller than a threshold.

3-D Audio Data Manipulation System and Method

A 3-D audio data manipulation system providing a multi-dimensional audio field generated by a speaker array. The speaker array is driven by audio data and has a plurality of speakers, with each speaker having a unique physical position within the audio field. The system includes a 3-D mixing module having a plurality of fader channels. Each fader channels configured to receive input audio data. The input audio data selectable from a plurality of 3-D mixing module audio data input channels. Each fader channels further configured to provide a selectable sound intensity increase, or decrease, to the input audio data. The 3-D mixing module further provides a selectable plurality of 3-D mixing module audio data output channels for each of the plurality of fader channels. Any 3-D mixing module audio data output channel may be redirected back into a 3-D mixing module audio data input channel of the 3-D mixing module. Each of the plurality of 3-D mixing module audio data output tracks is then directed to a selectable speaker position, or plurality of speaker positions, within the speaker array to produce the audio field. 1. A 3-D audio data manipulation system , the system providing a multi-dimensional audio field from a speaker array , the speaker array having a plurality of speakers , each speaker having a unique physical position within the audio field , the speaker array driven by audio data , the 3-D audio data manipulation comprising:a 3-D mixing module, the 3-D mixing module comprising a plurality of fader channels, each fader channels configured to receive input audio data, the input audio data selectable from a plurality of 3-D mixing module audio data input channels, each fader channels further configured to provide a selectable sound intensity increase, or decrease, to the input audio data;the 3-D mixing module further comprising a selectable plurality of 3-D mixing module audio data output channels for each of the plurality of fader channels;wherein any 3-D ...

Device connecting multiple audio sources over wireless connections to amplifiers and speakers

An audio device connects multiple audio sources to speakers. The audio device has an audio input for receiving the output of a wireless receiver, an audio channel including an amplifier that processes the audio input to provide an audio signal that is directed to the speakers. The audio channel also can include a digital-to-analog converter and/or line level switch. The line level switch enables the audio device to direct either the audio from a line level input or the wireless audio device to the speakers. The audio device can have a housing, which has a recess that receives the wireless audio device. In the recess, a receptacle is located to connect to a power plug of a wireless receiver. Another connector is located in the recess to connect the audio output of the wireless receiver to the audio input of the audio device.

SOUND REPRODUCTION APPARATUS AND SOUND REPRODUCTION METHOD

Signals obtained by convoluting opposite phase signals of impulse responses corresponding to current positions of sound collection units attached to right and left suppliers out of impulse responses calculated in association with a plurality of positions to sound signals for right and left ears are supplied to the right and left suppliers, respectively. 1. A sound reproduction apparatus , which outputs a sound signal for a right ear and a sound signal for a left ear , which are included in a sound signal as a binaural signal , to loudspeakers , comprising:an acquisition unit configured to acquire signals which are output from sound collection units, which are respectively attached to a left supplier configured to directly supply a sound according to a signal to a left ear of a listener and a right supplier configured to directly supply a sound according to a signal to a right ear of the listener, and collect sounds produced from the loudspeakers;a generation unit configured to calculate impulse responses from the signals acquired by said acquisition unit and to generate opposite phase signals of the calculated impulse responses; anda supply unit configured to respectively supply signals, which are obtained by convoluting the signals generated by said generation unit to the sound signal for the right ear and the sound signal for the left ear, to the left supplier and the right supplier,wherein said supply unit respectively supplies, to the left supplier and the right supplier, signals which are obtained by convoluting opposite phase signals of impulse responses corresponding to current positions of the sound collection units attached to the left supplier and the right supplier out of impulse responses calculated by said acquisition unit and said generation unit in association with a plurality of positions to the sound signal for the right ear and the sound signal for the left ear.2. The apparatus according to claim 1 , further comprising a unit configured to set one ...

Data transfer method and system for loudspeakers in a digital sound reproduction system

The present publication describes a data transfer method and system in a digital sound reproduction system. The method comprises method steps for generating a digital audio stream for multiple channels in a host data source, e.g. a computer, the audio stream is formed by multiple consecutive samples, receiving the digital audio stream sent by the host data source through a digital data transmission network by several digital receivers each of which including a microcontroller with a clock, the receivers further including means for generating an audio signal. In accordance with the invention the host data source sends repeatedly a synchronization sample to at least one receiver, the receiver replies to the synchronization sample by a return sample, the host calculates a latency (T) for each receiver based on the sending time (Th) of the synchronization sample and the reception time (Th) of the return sample and the processing time (Tt-Tt) of the receiver, the host sends to the receiver information of the calculated latency (T) in combination with the time stamp the measurement time, based on this information the receiver adjusts the function of its clock, and the above synchronization steps are repeated continuously. 1. A data transfer method in a digital sound reproduction system , said method comprising the steps of;generating a digital audio stream for multiple channels in a host data source, the audio stream being formed by multiple consecutive samples,receiving the digital audio stream sent by the host data source through a digital data transmission network by several digital receivers each of which including a microcontroller with a clock, the receivers further including means for generating an audio signal out of the digital audio stream,initiating synchronization, by the host data source, of the receivers by sending repeatedly a synchronization sample to each of the receivers, wherein each receiver replies to the synchronization sample by a return sample,{' ...

System With Speaker, Transceiver and Related Devices

A system includes a housing, a speaker included in the housing, and a first transceiver to wirelessly transmit and receive audio content and control information. The speaker is able to produce audible signals from the audio content received by the transceiver. 1. A system comprisinga housing;a speaker included in the housing; anda first transceiver to wirelessly transmit and receive audio content and control information, the speaker being able to produce audible signals from the audio content received by the transceiver.2. The system of claim 1 , further including a remote control that can control the speaker as well as encoding and encryption parameters.3. The system of claim 1 , wherein the first transceiver includes a transmitter for transmitting wireless signals on a 2.4 GHz carrier frequency.4. The system of claim 1 , wherein the first transceiver includes a receiver for receiving wireless signals on a 2.4 GHz carrier frequency.5. The system of claim 1 , wherein the first transceiver complies with one or more of the IEEE 802.11 standards.6. The system of claim 1 , wherein the first transceiver performs signal processing prior to transmission using one or more of phase modulation and digital modulation.7. The system of claim 6 , wherein the phase modulation and/or digital modulation include one or more of frequency shift key and phase shift key.8. The system of claim 1 , wherein the first transceiver complies with one or more protocols to transmit audio content including master/slave claim 1 , server/client and peer/peer.9. The system of claim 1 , wherein data can be provided in a bi-directional manner such that the first transceiver claim 1 , a remote speaker and/or other devices in the system can transmit or receive the data.10. The system of claim 9 , wherein the system includes the remote speaker.11. The system of claim 1 , wherein the first transceiver can produce two channels for wireless transmission that can carry separate sets of audio content.12. The ...

Audio Processing Device

The invention relates to an audio processing device () including: 1. An audio processing device including:at least one connector, suitable for receiving data defining an input sound signal corresponding to a plurality of audio channels;a processing module suitable for determining at least one signal intended for a loudspeaker as a function of said defining data,the device further including a detection module suitable for detecting the proximity of another similar audio processing device and the processing module is suitable for determining said signal intended for the loudspeaker as a function furthermore of a number of other detected device(s); wherein said determination of the signal done by the processing module comprises:i. selecting a channel from among a plurality of audio channels corresponding to the defining data of the input sound signal as a function of a distance between the device and another detected device; and/orii combining different audio channels from among a plurality of channels corresponding to the defining data of the input sound signal as a function of a distance between the device and another detected device; and/oriii selecting frequencies of said combination.2. An audio processing device according to , comprising a communication module for communicating with at least one other audio processing device , according to .3. The audio processing device according to claim 2 , wherein the communication means comprise a radio transceiver module and in which the detection module is suitable for detecting the proximity of another audio processing device if a radio signal emitted by the other processing device is received by the radio processing device at a level above a given threshold.4. The audio processing device according to claim 1 , wherein the processing module is suitable for determining a plurality of signals intended for respective loudspeakers claim 1 , each of said signals being determined as a function of said defining data and the ...

Passive Loudspeaker Multiplexer

A passive loudspeaker multiplexer () adapted to be interconnected between an amplifier () and a plurality of loudspeakers (-), includes two input ports () adapted to be connected to the output ports () of an amplifier (); two output ports () adapted to be connected to the input ports of a plurality of loudspeakers (-) such that the plurality of loudspeakers are connected in parallel to the output ports; at least one first capacitor () connected between a first input port () and a first output port (); a first high pass () connected between the output ports. 1. A passive loudspeaker multiplexer adapted to be interconnected between an amplifier and a plurality of loudspeakers , comprisingtwo input ports adapted to be connected to the output ports of an amplifier;two output ports adapted to be connected to the input ports of a plurality of loudspeakers such that the plurality of loudspeakers are connected in parallel to the output ports;at least one first capacitor connected between a first input port and a first output port; anda first high pass connected between the output ports.2. The passive loudspeaker multiplexer according to claim 1 , wherein a second high pass is connected between the input ports.3. The passive loudspeaker multiplexer according to claim 1 , wherein the first high pass comprises a first resistor and a second capacitor connected in series and/or wherein the second high pass comprises a second resistor and a third capacitor connected in series.4. The passive loudspeaker multiplexer according any one of claim 1 , wherein the output ports are connected to a plurality of output connectors and wherein the output connectors are connected in parallel to the output ports and to each output connector a loudspeaker may be connected.5. The passive loudspeaker multiplexer according to any one of claim 1 , wherein the first capacitor is a polarized capacitor claim 1 , preferably an electrolyte capacitor.6. The passive loudspeaker multiplexer according to ...

WIRELESS MEDIA SOURCE FOR COMMUNICATION WITH DEVICES ON DATA BUS OF VEHICLE

A wireless audio source integrated into a host bus of a vehicle includes a transmitter module for wirelessly transmitting signals received from a connected portable audio player to a receiver module connected to the host bus. The host bus links to other multimedia devices, such as to the vehicle's radio and speakers, thereby enabling the audio content to be reproduced over the speakers. In one aspect, the user is able to control the volume and related functions of the audio content using the standard radio controls. In other aspects, a portable wireless transceiver is disclosed wherein an occupant of the vehicle can transmit and receive multimedia data to and from a wireless transceiver coupled to the host bus. Multimedia and other devices connected to the host bus can thereby send and receive signals to and from the portable wireless transceiver. 1. A wireless audio source for transmitting audio content to a receiver coupled to a host bus integrated into a vehicle , comprising:a wireless transmitter module configured to interface with an output of a portable audio player, to receive an audio signal from the portable audio player, and to wirelessly transmit the audio signal using a predetermined wireless protocol;wherein the transmitted audio signal is received by a wireless receiver coupled to an interface with the host bus for transmitting the audio data onto the bus, and wherein the wireless receiver is configured to receive the transmitted audio signal using the predetermined wireless protocol and to recover audio data in the signal for playback on speakers in the vehicle.2. The wireless audio source of wherein the predetermined wireless protocol is Bluetooth.3. The wireless audio source of wherein the wireless receiver sends claim 1 , through the host bus claim 1 , the audio data to the speakers claim 1 , the speakers configured to electronically interface with the host bus for audio reproduction in the vehicle.4. The wireless audio source of wherein the ...

SMART TOOL FOR HEADPHONES

Systems, methods, and devices of the various embodiments enable headphone users to he hear audible announcements of relevance to the user. In the various embodiments, a user device, such as headphones, may receive an announcement, determine whether the announcement is of interest to the user, and pause the current audio output by the headphones and enable the user to hear the announcement. In an embodiment, an announcement system may transmit announcements audibly and via a wireless channel, for example via broadcast and/or multicast transmission, to enable user devices to receive announcements and play relevant announcements via the headphones. In another embodiment, an announcement system may embedded announcement identifiers within audible announcements to enable a user device to identify announcements of interest. In another embodiment, a user device may filter received audio to identify announcements of interest to the user based on recognized subject matter within the received audio. 1. A method for ensuring that audible announcements are heard by a user wearing headphones , comprising:receiving an announcement in the headphones via a wireless link;determining, in a processor within the headphones, whether the announcement is relevant to a user of the headphones;pausing a current audio output of the headphones in response to determining that the announcement is relevant to the user; andplaying the announcement over the headphones in response to determining that the announcement is relevant to the user.2. The method of claim 1 , further comprising:establishing a short range communication link between the headphones and an announcement system prior to receiving the announcement;determining, in the processor within the headphones, whether the short range communication link is active; andresuming the current audio output of the headphones after playing the announcement, pausing a current audio output of the headphones in response to determining that the ...

Electronic device

An electronic device is provided. The electronic device can include one or more protrusions and a casing. The casing can be shaped and dimensioned to carry the audio output portions. The casing can include a first face, a second face and sides. The one or more protrusions can extend from any of, or any combination of, the first face, the second face and at least one of the sides.

Control Apparatus for a Tactile Audio Display

An apparatus comprising: an input configured to receive at feast one signal comprising a haptic signal part and an audio signal part; a stream processor configured to separate the at least one signal to generate at least one haptic signal and at least one audio signal; a router configured to route the at least one haptic signal as a first output signal to a first output and the at least one audio signal as a second output signal to a second output; and an output configured to output the processed first output signal such that it generates a haptic effect and the processed second output signal generates an acoustic effect. 120-. (canceled)21. A method comprising:receiving at least one signal comprising a haptic signal part and an audio signal part;separating the at least one signal to generate at least one haptic signal and at least one audio signal;routing the at least one haptic signal as a first output signal to a first output and the at least one audio signal as a second output signal to a second output; andoutputting the processed first output signal such that it generates a haptic effect and the processed second output signal generates an acoustic effect.22. The method as claimed in claim 21 , wherein separating the at least one signal comprises frequency filtering the at least one signal to generate the at least one haptic signal and the at least one audio signal.23. The method as claimed in claim 22 , wherein frequency filtering the at least one signals comprises:low pass filtering the at least one signal to generate the at least one haptic signal; andhigh pass filtering the at least one signal to generate the at least one audio signal.24. The method as claimed in claim 21 , further comprising signal processing separately the at least one haptic signal to generate at least one processed haptic signal and the at least one audio signal to generate at least one processed audio signal.25. The method as claimed in claim 24 , wherein signal processing separately ...

Crossover Circuit

A crossover circuit, disposed within a sound producing device including a first sound producing cell driven by a first driving signal and a second sound producing cell driven by a second driving signal, includes a first filter receiving an input signal at an input terminal of the first filter, a first subtraction circuit, and a second filter coupled between the output terminal of the first filter and the second input terminal of the first subtraction circuit. A first input terminal of the first subtraction circuit is coupled to the input terminal of the first filter; a second input terminal of the first subtraction circuit is coupled to an output terminal of the first filter. The crossover circuit produces the first driving signal and the second driving signal according to a first output signal of the first subtraction circuit and a second output signal of the first filter respectively. 1. A crossover circuit , disposed within a sound producing device , abbreviated as SPD , wherein the SPD comprises a first sound producing cell driven by a first driving signal and a second sound producing cell driven by a second driving signal , the crossover circuit comprising:a first filter, receiving an input signal at an input terminal of the first filter;a first subtraction circuit, wherein a first input terminal of the first subtraction circuit is coupled to the input terminal of the first filter, a second input terminal of the first subtraction circuit is coupled to an output terminal of the first filter; anda second filter, coupled between the output terminal of the first filter and the second input terminal of the first subtraction circuit;wherein the crossover circuit produces the first driving signal according to a first output signal of the first subtraction circuit;wherein the crossover circuit produces the second driving signal according to a second output signal of the first filter.2. The crossover circuit of claim 1 , wherein the second filter and the second sound ...

SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM

The present technology relates to a signal processing apparatus, a signal processing method, and a program that make it possible to reduce an amount of computation for wavefront synthesis. 1. A signal processing apparatus comprising:a reproduction speaker selection section that, according to a position of a virtual sound source and a range of a listening area, selects, from a plurality of speakers included in a speaker array, a plurality of reproduction speakers to be used for reproducing a sound based on an audio signal of the virtual sound source.2. The signal processing apparatus according to claim 1 , wherein claim 1 ,in a case where the virtual sound source has a size, the reproduction speaker selection section selects the reproduction speakers, based on an area of the virtual sound source and on the range of the listening area.3. The signal processing apparatus according to claim 1 , whereinthe reproduction speaker selection section selects the reproduction speakers according to straight lines determined with respect to positional relation between the virtual sound source and the listening area.4. The signal processing apparatus according to claim 3 , whereinthe reproduction speaker selection section selects the reproduction speakers according to the two straight lines that differ from each other.5. The signal processing apparatus according to claim 4 , whereinthe straight lines are in touch with the listening area.6. The signal processing apparatus according to claim 4 , whereinthe reproduction speaker selection section selects, as the reproduction speakers, the speakers positioned near a point of intersection between the straight lines and the speaker array.7. The signal processing apparatus according to claim 4 , whereinthe reproduction speaker selection section selects, as the reproduction speakers, the speaker included in the plurality of the speakers of the speaker array and located between a position near a point of intersection between one of the ...

WIRELESS SPEAKER ARRANGEMENT

The present invention relates to a wireless speaker arrangement. The present invention also relates to a wireless speaker system comprising at least a pair of such speaker arrangements, to a method for operating a wireless speaker arrangement and to a corresponding computer program product. 1. A self-contained wireless speaker arrangement configured to deliver an audio experience to a user , the wireless speaker arrangement comprising:an outer housing having a predefined volume and form factor;an electro-acoustic transducer comprising a plurality of matched speaker components;an amplifier connected to the electro-acoustic transducer and configured for converting audio information into sound, the amplifier comprising a plurality of amplifier components selected to match the plurality of matched speaker components of the electro-acoustic transducer;a first wireless transceiver module for providing a wireless Internet connection to the wireless speaker arrangement;a digital storage device for providing a buffer for the audio information to be delivered by the wireless speaker arrangement, anda control unit connected to and configured to control the amplifier, the first wireless transceiver module and the digital storage device, whereinthe electro-acoustic transducer, the amplifier, the first wireless transceiver module, the digital storage device and the control unit are positioned entirely within the outer housing,the selection of components of the electro-acoustic transducer and the amplifier are based on the volume and form factor of the outer housing for maximizing the quality of the audio experience delivered to the user, and receive information, using the Internet connection, from a remotely arranged server, and', 'convert the received information into audio to be amplified using the amplifier and delivered to the user., 'the control unit is configured to2. The wireless speaker arrangement according to claim 1 , further comprising a second wireless transceiver ...

AUDIO CHANNEL CONTROL CIRCUIT

An audio channel control circuit includes a filter module and a determining module. The audio channel control circuit receives a first audio signal and a second audio signal from an audio device. The first audio signal loads a first carrier signal, while the second audio signal loads a second carrier signal. The first carrier signal and the second carrier signal have different phases. The filter module filters the first audio signal and the second audio signal, separating the first carrier signal from the first audio signal and the second carrier signal from the second audio signal. According to the phases of the first carrier signal and the second carrier signal, the determining module chooses a speaker of the left audio channel or a speaker of the right audio channel to output the first audio signal or the second audio signal. 1. An audio channel control circuit for receiving a first audio signal and a second audio signal , wherein the first audio signal loads a first carrier signal , the second audio signal loads a second carrier signal , and the first carrier signal and the second carrier signal have different phases , the audio channel control circuit comprising:a filter module configured to filter the first audio signal and the second audio signal to separate the first carrier signal from the first audio signal and the second carrier signal from the second audio signal; anda determining module configured to determine a relationship among the first audio signal, the second audio signal, a right audio channel, and a left audio channel, and output the first audio signal and the second audio signal to speakers corresponding to the right audio channel and the left audio channel respectively, according to the determined relationship.2. The audio channel control circuit as claimed in claim 1 , wherein the filter module comprises:a bandpass amplifier configured to filter the first audio signal and the second audio signal, and then separate and amplify the first ...

ACOUSTIC SIGNAL PROCESSING DEVICE, ACOUSTIC SIGNAL PROCESSING METHOD, AND ACOUSTIC SIGNAL PROCESSING PROGRAM

An acoustic signal processing device includes: a focal point position determination unit that obtains a plurality of sets of initial focal point coordinates, coordinates of the virtual sound source, and a direction of directivity thereof, and for a pair of sets of initial focal point coordinates with different polarities among the plurality of sets of initial focal point coordinates, multiplies the sets of initial focal point coordinates by a rotation matrix based on the coordinates of the virtual sound source to thereby determine sets of focal point coordinates, the rotation matrix being specified from the direction of the directivity; a circular harmonic coefficient conversion unit that calculates weights to be applied to multipoles including the sets of focal point coordinates from a circular harmonic coefficient; a filter coefficient computation unit that, for each of the speakers in the speaker array, computes a weighted driving function to be applied to the speaker from the sets of focal point coordinates, polarities of the sets of focal point coordinates, and the weights to be applied to the multipoles; and a convolutional operation unit that, for each of the speakers in the speaker array, convolves the weighted driving function for the speaker into the input acoustic signal to output the output acoustic signal for the speaker. 1. An acoustic signal processing device for converting an input acoustic signal into output acoustic signals for a plurality of speakers in a speaker array formed by arranging the speakers for creating a virtual sound source , comprising:a focal point position determination unit that obtains a plurality of sets of initial focal point coordinates, coordinates of the virtual sound source, and a direction of directivity thereof, and for a pair of sets of initial focal point coordinates with different polarities among the plurality of sets of initial focal point coordinates, multiplies—the sets of initial focal point coordinates by a ...

ELECTRONIC DEVICE, METHOD AND COMPUTER PROGRAM

An electronic device for a vehicle comprising circuitry configured to obtain information about a planned maneuver of the vehicle; and circuitry configured to determine the position and/or orientation of a sound field based on the information about the planned maneuver of the vehicle. 1. An electronic device for a vehicle comprisingcircuitry configured to obtain information about a planned maneuver of the vehicle; andcircuitry configured to determine the position and/or orientation of a sound field based on the information about the planned maneuver of the vehicle.2. The electronic device of claim 1 , wherein the circuitry is configured to determine the position and/or orientation of the sound field by moving one or more virtual sound sources based on information about the planned maneuver of a vehicle.3. The electronic device of claim 1 , wherein the circuitry is configured to anticipate the planned maneuver by moving the sound field in accordance with the planned maneuver.4. The electronic device of claim 1 , wherein the information about the planned maneuver of the vehicle comprises a braking force claim 1 , a steering angle claim 1 , a velocity and/or accelerating parameter.5. The electronic device of claim 1 , wherein the circuitry is configured to anticipate the planned maneuver by tilting the sound field based on an inclination angle in accordance with the planned maneuver.6. The electronic device of claim 1 , wherein the circuitry is configured to anticipate the planned maneuver by moving the sound field horizontally in accordance with the planned maneuver.7. The electronic device of claim 1 , wherein the circuitry is configured to obtain the information about the planned maneuver from an autonomous driving section.8. The electronic device of claim 2 , wherein the circuitry is configured to render the sound field according to the determined positions the virtual sound sources.9. The electronic device of claim 1 , wherein the circuitry is configured to produce ...

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING SYSTEM AND PROGRAM

There is provided an information processing apparatus that selects an appropriate speaker from a plurality of speakers corresponding to positions of projection areas. The information processing apparatus includes a control section that selects a speaker to be used when a projection is performed on a specified projection area from a plurality of speakers on a basis of information about the specified projection area and information about positions of the plurality of speakers from a plurality of projection areas capable of projecting an image. 1. An information processing apparatus , comprising:a control section that selects a speaker to be used when a projection is performed on a specified projection area from a plurality of speakers on a basis of information about the specified projection area and information about positions of the plurality of speakers from a plurality of projection areas capable of projecting an image.2. The information processing apparatus according to claim 1 , whereinthe control section selects the speaker to be used on a basis of a distance between the specified projection area and each speaker.3. The information processing apparatus according to claim 2 , whereinthe control section selects a speaker that has a distance closest to the specified projection area as the speaker to be used from the plurality of speakers.4. The information processing apparatus according to claim 1 , whereinthe control section selects two or more speakers as the speaker to be used.5. The information processing apparatus according to claim 4 , whereindifferent voice channels are allocated to the respective two or more speakers.6. The information processing apparatus according to claim 5 , whereinthe control section sets a plurality of search areas for searching the speaker and selects a speaker to be used for each search area.7. The information processing apparatus according to claim 6 , whereinthe control section sets the plurality of search areas using a position ...

Speaker Module And Electronic Device Using The Same

A speaker module is provided. The speaker module includes a housing, a speaker unit, and a modulating unit. The housing has a main segment and an extension segment connecting to the main segment and extending away from the main segment, the main segment and the extension segment communicate with each other and form a chamber. The speaker unit is disposed in the housing in a position that is relative to the main segment. The modulating unit is arranged to correspond to the extension segment and is positioned in the housing. The shape of a cross section of the modulating unit is compatible with the shape of a cross section of the extension segment, and a length between the speaker unit and the modulating unit along the chamber is greater than 0. 1. A speaker module , comprising:a housing, having a main segment and an extension segment connected to the main segment and extending away from the main segment, wherein the main segment and the extension segment communicate with each other and form a chamber;a speaker unit, disposed in the housing in a position that is relative to the main segment; anda modulating unit, arranged to correspond to the extension segment and positioned in the housing, wherein the shape of a cross section of the modulating unit is compatible with the shape of a cross section of the extension segment,wherein a length between the speaker unit and the modulating unit along the chamber is greater than 0.2. The speaker module as claimed in claim 1 , wherein the extension segment comprises:a first sub-segment, connected to the main segment and extending in a first direction; anda second sub-segment, connecting to the first sub-segment and extending in a second direction away from the main segment;wherein the modulating unit is positioned in the second sub-segment.3. The speaker module as claimed in claim 2 , wherein the first direction is different from the second direction.4. The speaker module as claimed in claim 2 , wherein the first direction is ...

ACOUSTIC OUTPUT DEVICE AND CONTROL METHOD THEREOF

An acoustic output device and a control method thereof are provided. The acoustic output device includes: at least one first speaker configured to output a first sound range; a plurality of second speakers configured to output a second sound range that is different from the first sound range; a first crossover circuit connected to the first speaker and one of the plurality of second speakers; a second crossover circuit connected to the first speaker and another of the plurality of second speakers; and a processor configured to control the first and second crossover circuits to provide acoustic signals to the first speaker and the plurality of second speakers, wherein a frequency band of an acoustic signal provided to the first speaker connected to the first crossover circuit is at least partially different from a frequency band of an acoustic signal provided to the first speaker connected to the second of crossover circuit, and wherein a frequency band of an acoustic signal provided to the one of the plurality of second speakers connected to the second crossover circuit is at least partially different from a frequency band of an acoustic signal provided to the other of the plurality of second speakers connected to the second of crossover circuit. 1. An acoustic output device comprising:at least one first speaker configured to output a first sound range;a plurality of second speakers configured to output a second sound range that is different from the first sound range;a first crossover circuit connected to the first speaker and one of the plurality of second speakers;a second crossover circuit connected to the first speaker and another of the plurality of second speakers; anda processor configured to control the first and second crossover circuits to provide acoustic signals to the first speaker and the plurality of second speakers,wherein a frequency band of an acoustic signal provided to the first speaker connected to the first crossover circuit is at least ...

SYSTEMS AND METHODS FOR CONTROLLING PLATE LOUDSPEAKERS USING MODAL CROSSOVER NETWORKS

Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate. 1. A method for controlling the performance of a plate loudspeaker , the method comprising:processing a signal into a plurality of sub-signals using a modal crossover network, wherein each sub-signal is associated with a frequency band;assigning each sub-signal to one or more of a plurality of drivers located on a plate of the plate loudspeaker and assigning a relative amplitude to each of the plurality of drivers, wherein the sub-signal and the relative amplitude assigned to each of the plurality of drivers is determined based at least on the location of the driver on the plate;routing each sub-signal to its assigned one or more plurality of drivers; anddriving the plate loudspeaker with the plurality of drivers having received the routed sub-signals at the assigned relative amplitude.2. The method of claim 1 , wherein the plurality of drivers excite a plurality of modes in the plate loudspeaker.3. The method of claim 1 , wherein the plurality of drivers are independently controlled.4. The method of claim 1 , wherein the plurality of drivers are arranged periodically on the plate loudspeaker.5. The method of claim 1 , wherein the step of processing the signal into the plurality of sub-signals comprises separating the signal into a plurality of frequency bands using a plurality of filters.6. The method of claim 5 , wherein the ...

Arrayable loudspeaker with constant wide beamwidth

An arrayable loudspeaker ( 11 ) has at least one high frequency driver ( 39 ) mounted to a horn ( 37 ) and at least one pair of low frequency drivers ( 41 ) configured behind and in a closely spaced relationship to the horn to form low frequency side chambers ( 71 ) between the drivers and the horn from which acoustic energy produced by the low frequency drivers can propagate. Low frequency exit channels ( 77 ) above and below the horn are coupled to the low frequency side chambers ( 71 ). The configuration of the horn and low frequency drivers and the low frequency side chambers and low frequency exit channels is such that acoustical outputs of all drivers radiate coaxially from the loudspeaker with substantially constant wide beamwidth in the non-arraying plane. Signal processing can be added to enhance beamwidth control critical frequency ranges above crossover.

AUDIO SYSTEM WITH REMOVABLE SPEAKER

An audio system for use in an automotive vehicle is provided. The audio system is configured to detect the removal of the removable speaker and adjust the audio signal to the fixed speakers so as to maintain the quality of sound within the vehicle. The audio system includes a signal processor configured to detect the presence of the removable speaker. The audio system distributes the frequency transmitted to the removable speaker to the speakers within the automotive vehicle so as to maintain the same sound quality when the removable speaker is removed. 1. An audio system for use in an automotive vehicle , the audio system comprising:a plurality of speakers, the plurality of speakers consisting of a plurality of fixed speakers and a removable speaker, the plurality of fixed speakers fixedly mounted within the automotive vehicle and the removable speaker configured to be removed from the automotive vehicle;a signal processor in electrical communication with each of the plurality of speakers and configured to detect each of the plurality of speakers, the signal processor configured to transmit a first signal and a second signal, wherein the first signal is configured to generate a predetermined audio profile when each of the plurality of speakers is in electrical communication with the signal processor, the second signal is transmitted to each of the fixed speakers when the removable speaker is removed so as to generate the predetermined audio profile.2. The audio system as set forth in claim 1 , further including a sensor configured to detect the presence of the removable speaker claim 1 , the sensor communicating the presence of the removable speaker to the signal processor.3. The audio system as set forth in claim 1 , wherein the first signal includes a predetermined frequency claim 1 , and wherein the second signal is configured to distribute the predetermined frequency among the plurality of speakers electrically connected within the automotive vehicle.4. The ...

AUDIO WIRELESS TRANSMISSION SYSTEM, SPEAKER DEVICE, AND SOURCE DEVICE

In a one-to-many audio wireless transmission system in which a plurality of speaker devices on an audio reception side are provided with respect to one source device, in a case where an error has occurred in a certain speaker device, a possibility of the same error occurring in other speaker devices is reduced. A speaker device () includes an error detection unit () which detects an error regarding sound output and transmits error information which is information regarding an error detected by the error detection unit () to a source device () by using wireless communication. The source device () transmits an operation request corresponding to the error information by using wireless communication to speaker devices other than the speaker device which has transmitted the error information. 1. An audio wireless transmission system comprising:a plurality of speaker devices; anda source device which transmits an audio signal to the plurality of speaker devices by using wireless communication,wherein the speaker device includes an error detection unit which detects an error regarding sound output and transmits error information which is information regarding error detected by the error detection unit to the source device by using wireless communication, andthe source device transmits an operation request corresponding to the error information by using wireless communication to speaker devices other than the speaker device which has transmitted the error information.2. The audio wireless transmission system according to claim 1 ,wherein the speaker device includes an analog power source unit which supplies electric power to an analog circuit, a digital power source unit which supplies electric power to a digital circuit, a wireless reception unit which receives the audio signal, a control unit, a D/A converter which converts the audio signal received by the wireless reception unit into an analog signal from the digital signal, an amplification unit which amplifies the ...

WIRELESS IN-EAR HEADPHONES

A headphone system including a first earpiece, a second earpiece, and a coupler. The headphone system receives a wireless signal having audio content from an external audio source and reproduces at least a portion of the audio content using the first and second earpieces. The first earpiece includes a power source connector to be removably connected to an external power source, a first energy storage device coupled to receive power from the power source connector, and a first power transfer device coupled to receive power from the power source connector. The second earpiece includes a second power transfer device for receiving power from the first power transfer device and a second energy storage device coupled to receive power from the second power transfer device. The coupler is to hold the first and second earpieces together with the first and second power transfer devices in a power transfer configuration. 1. A headphone system , comprising: a power source connector to be removably connected to an external power source;', 'a first energy storage device coupled to receive power from the power source connector; and', 'a first power transfer device coupled to receive power from the power source connector;, 'a first earpiece including a second power transfer device for receiving power from the first power transfer device; and', 'a second energy storage device coupled to receive power from the second power transfer device; and, 'a second earpiece includinga coupler on one or both of the first and second earpieces, to hold the first and second earpieces together with the first and second power transfer devices in a power transfer configuration.2. The headphone system of wherein the coupler includes a magnet.3. The headphone system of wherein the first and second power transfer devices include electrical contacts urged into physical contact when the first and second earpieces are held together.4. The headphone system of wherein the first and second power transfer ...

SOUND REPRODUCTION DEVICE, SOUND REPRODUCTION METHOD AND SOUND REPRODUCTION PROGRAM

The above sound reproduction device is applied to an acoustic space such as a passenger compartment, and controls the levels of the reproduced sounds at two evaluation points set at the seats in the passenger compartment, for example. Specifically, the sound reproduction device controls the phase of the sound signal inputted from external and supplies the sound signals to the pair of speakers. The phase control is performed for each of the plurality of listening positions such that a sum of reproduced sound levels at the two evaluation points becomes larger than the sum obtained in a case where the sound signal is reproduced only one of the pair of speakers. 1. A sound reproduction device comprising:a pair of speakers arranged in front of and behind a plurality of listening positions each having two evaluation points set in an acoustic space;an input unit which receives a sound signal; anda phase control unit which controls a phase of the sound signal and supplies the sound signals to the pair of speakers,wherein the phase control unit determines, for each of the plurality of listening positions, a control frequency band and a phase difference such that a sum of reproduced sound levels at the two evaluation points becomes larger than the sum obtained in a case where the sound signal is reproduced from one of the pair of speakers, and controls the sound signals supplied to the pair of speakers.2. The sound reproduction device according to claim 1 , wherein the phase control unit calculates the control frequency band and the phase difference based on distances between the pair of speakers and the listening points.3. The sound reproduction device according to claim 1 , wherein the phase control unit determines the control frequency band and the phase difference based on measured data obtained by collecting sound reproduced by the speakers at the listening positions.4. The sound reproduction device according to claim 1 , wherein one of the pair of speakers is arranged ...

SYSTEM AND METHOD FOR PLAYBACK IN A SPEAKER SYSTEM

Various aspects of a system and a method for playback in a wireless speaker system are disclosed herein. Each of a plurality of speakers in the system is operable to wirelessly receive one or more audio files from one or more audio source devices. The one or more audio source devices transmit the one or more audio files to at least one of the plurality of speakers in response to receipt of an acknowledgement of availability of at least one of the plurality of speakers. 1. A system for playback of audio files comprising:a plurality of speakers, each operable to wirelessly receive one or more audio files from one or more audio source devices,wherein said one or more audio source devices transmit said one or more audio files to at least one of said plurality of speakers in response to receiving an acknowledgement of availability of said at least one of said plurality of speakers.2. The system of claim 1 , wherein each of said plurality of speakers is operable to playback a plurality of audio files simultaneously.3. The system of claim 1 , wherein each of said plurality of speakers is operable to:playback a first frequency component of a first audio file from a first of said one or more audio source devices; andplayback a second frequency component of a second audio file from a second of said one or more audio source devices,wherein said first frequency component and said second frequency component are played back simultaneously.4. The system of claim 1 , wherein each of said plurality of speakers is operable to:playback a first frequency component of a first audio file;playback a second frequency component of a second audio file;wherein said first audio file and said second audio file are transmitted from the same audio source device of said one or more audio source devices; andwherein said first frequency component and said second frequency component are played back simultaneously.5. The system of claim 1 , wherein said at least one of said plurality of speakers ...

Location-Based Playlist

System, method, and apparatus including receiving an identification of content played a playback system and an identification of location of the playback system. A playlist of content is associated with the location. A request is received to retrieve the playlist of content and the requested playlist of content is sent to a playback system. 1. A method comprising: (1) an identification of content played by the first playback system and', '(2) an identification of a first location of the first playback system, wherein the first playback system comprises at least one first playback device;, 'receiving, via a network device over a wide area network (WAN) from a first playback system,'} (1) an identification of content played by the second playback system and', '(2) an identification of a second location of the second playback system, wherein the second playback system comprises at least one second playback device;, 'receiving, via the network device over the WAN from a second playback system,'} (1) a first playlist of content associated with the first location based on at least the identification of content played by the first playback system, and', '(2) a second playlist of content associated with the second location based on at least the identification of content played by the second playback system;, 'generating, via the network device,'}receiving, via the network device over the WAN from a third playback system, a request to retrieve at least one of the first playlist of content and the second playlist of content, wherein the third playback system comprises at least one third playback device; andsending, via the network device over the WAN to the third playback system, the requested at least one of the first playlist of content and the second playlist of content.2. The method of claim 1 , further comprising:receiving, via the network device over the WAN from the third playback system, a request for content from the requested at least one of the first playlist of ...

Circuits For Improved Audio Signal Reconstruction

An impedance matched resonant circuit uses inductors coupling an audio source and a speaker array in order to reduce feedback reflection induced by an audio signal traveling from the audio source to the array of speakers. An RC circuit could also be coupled to the positive and negative terminals of the speaker array to reduce the slope differential of the audio signal at certain frequencies. The circuit can be packaged together in a single module with switches to activate and deactivate portions of the circuit to alter the effectiveness of the circuit depending upon need. 1. A circuit configured to reduce quantization noise in an audio signal reconstructed from digitally encoded audio , comprising:a first circuitry comprising a first inductor, a second inductor, and a capacitor, wherein the first circuitry is configured to be coupled to a positive terminal of an audio signal source and to a positive terminal of an array of speakers; anda second circuitry comprising a third inductor, wherein the second circuitry is configured to be coupled to a negative terminal of the audio signal source and to a negative terminal of the array of speakers.2. The circuit of claim 1 , wherein the first inductor is in series with the capacitor claim 1 , both of which are in parallel with the second inductor.3. The circuit of claim 1 , wherein at least one of the first claim 1 , second claim 1 , and third inductors comprises a paramagnetic material.4. The circuit of claim 1 , wherein at least one of the first claim 1 , second claim 1 , and third inductors comprise a ferromagnetic material.5. The circuit of claim 1 , wherein at least one of the first claim 1 , second claim 1 , and third inductors has a gap that comprises at least one of a ferromagnetic and a diamagnetic material.6. The circuit of claim 1 , wherein a first switch is in parallel with the first circuitry.7. The circuit of claim 1 , wherein a second switch is in parallel with the second circuitry.8. The circuit of claim 1 , ...

MITIGATING CROSSTALK IN TISSUE CONDUCTION AUDIO SYSTEMS

An audio system on a headset presents audio content via tissue conduction to an inner ear of a first ear of a user. The system monitors, via one or more sensors on the headset, data about the presented audio content. The one or more sensors including at least one sensor configured to capture data about the presented audio content at a second ear of the user. The system estimates array transfer functions (ATFs) associated with the data, and generates sound filters for the transducer array using the estimated ATFs. The system presents adjusted audio content based in part on the sound filters. The adjusted audio content has a damped region at the second ear such that the amplitude of the adjusted audio content at the first ear has a higher amplitude than at the second ear. 1. A method comprising:presenting audio content via a transducer array that presents audio content via tissue conduction to an inner ear of a first ear of a user;monitoring, via one or more sensors on a headset, data about the presented audio content, the one or more sensors including a first group of sensors and a second group of sensors, and the first group of sensors is proximate to the first ear, and the second group of sensors is proximate to a second ear of the user and includes the at least one sensor, and at least one sensor of the one or more sensors is configured to capture data about the presented audio content at the second ear;estimating array transfer functions (ATFs) associated with the data;generating sound filters for the transducer array using the estimated ATFs; andpresenting adjusted audio content, via the transducer array, based in part on the sound filters, wherein the adjusted audio content has a damped region at the second ear such that the amplitude of the adjusted audio content at the first ear has a higher amplitude than at the second ear.2. The method of claim 1 , wherein the tissue conduction includes at least one of cartilage conduction and bone conduction.3. The method ...

PORTABLE HUMIDOR DEVICES

The present invention provides portable humidors 1) designed to withstand the rigors of travel, as well as varying weather and climate conditions, while securely retaining, and maintaining the smokable integrity of any cigars stored inside, and 2) designed with an audio speaker system. 1. A portable humidor comprising an interior region and an exterior region , a region for storing one or more smokable items,', 'one or more audio speakers,, 'the interior region comprising'}the exterior region having a top portion and a bottom portion connected in a manner permitting the portable humidor to open and close in an airtight manner.2. The portable humidor of claim 1 , wherein the interior region further comprises a removable lift-out tray configured to be positioned above the region for storing one or more smokable items.3. The portable humidor of claim 2 , wherein positioning of the removable lift-out tray above the region for storing one or more smokable items results in an air-tight seal.4. The portable humidor of claim 1 , wherein the smokable items are cigars and/or cigarettes.5. The portable humidor of claim 1 , wherein the interior region further comprises a region to store an igniting agent.6. The portable humidor of claim 1 , wherein the interior region further comprises a region to store a cigar cutting agent.7. The portable humidor of claim 1 , wherein the one or more speakers are configured to receive and emit a wireless audio signal from a smart phone and/or smart tablet.8. The portable humidor of claim 1 , wherein the one or more speakers are configured to emit an audio signal with the exterior region in an open or closed position.9. The portable humidor of claim 1 , wherein the interior region further comprises a battery configured to provide operating energy to the one or more audio speakers.10. The portable humidor of claim 1 , wherein the interior region further comprises a smart phone and/or smart tablet docking station.11. The portable humidor of claim ...

VEHICLE SPEAKER ARRANGEMENT

An audio system for a vehicle is provided with a woofer speaker having a front side for producing a required bass-range acoustic output in a passenger compartment of the vehicle and a back side having an infinite baffle. The audio system includes a bass-compatible speaker disposed in the passenger compartment of the vehicle. A controller is in communication with the woofer and the bass-compatible speaker and is programmed to distribute the required bass-range sound output to the woofer and the bass-compatible speaker based on at least one of a vehicle speed and a sound output level of the audio system. 1. An audio system for a vehicle comprising:a woofer speaker having a front side for producing a required bass-range acoustic output in a passenger compartment of the vehicle and a back side having an infinite baffle;a bass-compatible speaker disposed in the passenger compartment of the vehicle; and 'distribute the required bass-range sound output to the woofer and the bass-compatible speaker based on at least one of a vehicle speed and a sound output level of the audio system.', 'a controller in communication with the woofer and the bass-compatible speaker and programmed to2. The audio system of wherein the bass-compatible speaker includes a sealed speaker enclosure that is not in fluid communication the environment outside the vehicle.3. The audio system of wherein the woofer does not have a speaker enclosure and the back side of the woofer is adjacent at least one of a vehicle fuel tank claim 1 , an engine and a vehicle transmission driveshaft.4. The audio system of wherein the controller is programmed to determine a current sound pressure level in the passenger compartment of the vehicle based on an average input from a microphone disposed in the vehicle passenger compartment.5. The audio system of wherein the infinite baffle of the woofer does not include an enclosure so that the back side is in fluid with an environment outside the vehicle.6. The audio system of ...

METHOD FOR PROCESSING OF SOUND SIGNALS

A method for processing audio signals for creating a three dimensional sound environment includes: receiving at least one input signal from at least one sound source; creating a simulated signal at least in part on the basis of the received at least one input signal, the simulated signal representing a simulation of at least one input signal reflecting from the ground or floor; and creating an output signal at least partly on the basis of the simulated signal and the at least one received input signal, the output signal including a plurality of audio channels; at least two channels of the audio channels of the output signal representing signals for sound transducers above a listener's ear level at a nominal listening position, and at least two channels of the audio channels of the output signal representing signals for sound transducers below a listeners ear level at a nominal listening position. 1. A method for processing audio signals for creating a three dimensional sound environment , comprising at least the steps ofreceiving at least one input signal from at least one sound source,creating a simulated signal at least in part on the basis of said received at least one input signal, said simulated signal representing a simulation of at least one input signal reflecting from the ground or a floor, andcreating an output signal at least partly on the basis of said simulated signal and said at least one received input signal, said output signal comprising a plurality of audio channels;at least two channels of said audio channels of said output signal representing signals for sound transducers above a listener's ear level at a nominal listening position, andat least two channels of said audio channels of said output signal representing signals for sound transducers below a listener's ear level at a nominal listening position.2. A method according to claim 1 , further comprising at least the steps ofcreating output signals for a background sound environment byreceiving ...

Audio System

An audio system for reproducing audio signals comprising a signal processor, the signal processor having at least two processing channels and thereby the signal processor being configured to receive at least two separate audio signals and the signal processor configured to automatically select, in dependence upon the identity of each of the at least two audio signals assigned to the at least two processing channels, processing settings appropriate for each of the at least two audio signals assigned to the at least two processing channels that are for use by the signal processor in independently processing each of the at least two audio signals in each of the processing channels prior to combining said at least two audio signals and the audio system being configured to change the processing settings for a processing channel in response to a change in the identity of the audio signal assigned to that processing channel. 1. An audio system for reproducing audio signals comprising a signal processor , the signal processor having at least two processing channels and thereby the signal processor being configured to receive at least two separate audio signals and the signal processor configured to automatically select , in dependence upon the identity of each of the at least two audio signals assigned to the at least two processing channels , processing settings appropriate for each of the at least two audio signals assigned to the at least two processing channels that are for use by the signal processor in independently processing each of the at least two audio signals in each of the processing channels prior to combining at least two of said at least two audio signals and the audio system being configured to change the processing settings for a processing channel in response to a change in the identity of the audio signal assigned to that processing channel ,wherein the at least two audio signals each comprise a label so that the audio system is capable of determining ...

DUAL HIGH AND LOW FREQUENCY DRIVER CANALPHONE SYSTEM

A canalphone system may include a canalphone housing, and a first high frequency driver carried within the canalphone housing. The system may also include a second high frequency driver carried within the canalphone housing where the second high frequency driver is tuned with the first high frequency driver to deliver lower distortion than a standard canalphone high frequency driver and/or lower distortion than two standard canalphone high frequency drivers that are not tuned with each other. 1. A system comprising:a canalphone housing;a first low frequency driver carried within the canalphone housing;a second low frequency driver carried within the canalphone housing;a first high frequency driver carried within the canalphone housing; anda second high frequency driver carried within the canalphone housing, and the first high frequency driver and the second high frequency driver produce distinguishable frequencies to a person using the system comprising 12,000 hertz to 18,000 hertz.2. The system of further comprising:a first midrange frequency driver carried within the canalphone housing; anda second midrange frequency driver carried within the canalphone housing.3. The system of further comprising:a first sound tube connecting the first low frequency driver, the second low frequency driver, the first midrange frequency driver, and the second midrange frequency driver, the first sound tube connecting to an outlet on the canalphone housing; anda second sound tube connecting the first high frequency driver and the second high frequency driver with the outlet.4. The system of wherein the first high frequency driver and the second high frequency driver each produce similar frequencies.5. The system of wherein the first high frequency driver and second high frequency driver are positioned where the oscillation of one interacts with the oscillation of the other to reduce harmonic distortion.6. The system of wherein the first high frequency driver's and second high ...

ORIENTATION-BASED AUDIO

A method and apparatus for outputting audio based on an orientation of an electronic device, or video shown by the electronic device. The audio may be mapped to a set of speakers using either or both of the device and video orientation to determine which speakers receive certain audio channels. 1. A method for outputting audio from a plurality of speakers associated with an electronic device , comprising:determining an orientation of video displayed by the electronic device;using the determined orientation of video to determine a first set of speakers generally on a left side of the video being displayed by the electronic device;using the determined orientation of video to determine a second set of speakers generally on a right side of the video being displayed by the electronic device;routing left channel audio to the first set of speakers for output therefrom; androuting right channel audio to the second set of speakers for output therefrom.2. The method of claim 1 , further comprising the operations of:determining an orientation of the electronic device;using the determined orientation of the electronic device in addition to the orientation of video to determine the first set of speakers and second set of speakers.3. The method of claim 1 , further comprising the operations of;determining an orientation of the electronic device;using the determined orientation of the electronic device instead of the orientation of video to determine the first set of speakers and second set of speakers.4. The method of claim 1 , further comprising:determining if a video orientation is locked;in the event the video orientation is locked, determining an orientation of the electronic device; andusing the determined orientation of the electronic device instead of the orientation of video to determine the first set of speakers and second set of speakers.5. The method of claim 1 , further comprising:mixing a left front audio channel and a left rear audio channel to form the left channel ...

Wireless in-ear headphones

A headphone system including a first earpiece, a second earpiece, and a coupler. The headphone system receives a wireless signal having audio content from an external audio source and reproduces at least a portion of the audio content using the first and second earpieces. The first earpiece includes a power source connector to be removably connected to an external power source, a first energy storage device coupled to receive power from the power source connector, and a first power transfer device coupled to receive power from the power source connector. The second earpiece includes a second power transfer device for receiving power from the first power transfer device and a second energy storage device coupled to receive power from the second power transfer device. The coupler is to hold the first and second earpieces together with the first and second power transfer devices in a power transfer configuration.

REFLECTING SOUND FROM ACOUSTICALLY REFLECTIVE VIDEO SCREEN

In an audiovisual system, in which video is displayed on a screen that does not permit sound to pass through the screen, such as a light emitting diode panel, a high-frequency speaker positioned above an audience seating area can direct sound toward the screen, so that the screen can reflect the sound toward the audience seating area. The high-frequency speaker can be used with one or more low-frequency speakers positioned at or near the height of the audience seating area. The low-frequency and high-frequency sounds can appear to originate from close to the same height, thereby creating a realistic audio image at the audience seating area. A spectral filter can negate the spectral effects of propagation to and reflection from the screen. Suitable time delays can synchronize the high-frequency sound with the low-frequency sound and with video displayed on the screen. 1. An audiovisual system , comprising:a surface viewable from an audience seating area and configured to display video corresponding to a video signal;a projector configured to receive the video signal and project the video onto the surface; andan elevatable speaker positionable at a first height relative to the audience seating area, the elevatable speaker configured to produce a first sound associated with the video signal, the elevatable speaker configured to direct the first sound at the surface, the surface further configured to reflect the first sound toward the audience seating area.2. The audiovisual system of claim 1 , wherein the surface includes a wall.3. The audiovisual system of claim 1 , wherein:the elevatable speaker is a high-frequency speaker;the first sound is high-frequency sound;the high-frequency sound is produced in response to a high-frequency signal;the high-frequency signal is generated in response to a full-frequency audio signal that is associated with the video signal;the high-frequency signal includes frequencies in the full-frequency audio signal that are above a crossover ...

SOUND SPEAKER FOR A VEHICLE

A sound speaker for a vehicle is provided. The sound speaker includes a flat surface with a rod extending perpendicular from the surface, a cylindrical electro-dynamic exciter with an axial longitudinal through hole arranged for receiving the rod and a circular clamp for securing the electro-dynamic exciter on the first flat surface in a closed position. The electro-dynamic exciter includes a longitudinal rib inside the through hole and the rod includes a longitudinal recess for receiving the rib. The rod further includes a lateral recess for receiving the clamp. A least a part of the lateral recess forms a conical frustum and the clamp in the closed position forms a corresponding conical frustum. This part of the lateral recess pushes the clamp in the closed position against the electro-dynamic exciter towards the flat surface. 2. The sound speaker according to claim 1 , wherein said rod is not-metallic.3. The sound speaker according to claim 1 , wherein said flat surface is a door panel or a pillar of said vehicle.4. The sound speaker according to claim 1 , wherein said clamp is a quick release clamp.5. The sound speaker according to claim 1 , further comprising an annular ring with a center hole for receiving the rod and arranged for being positioned between electro-dynamic exciter and the clamp in the closed position claim 1 , wherein an outer diameter of said ring is larger than an outer diameter of said clamp.6. The sound speaker according to claim 1 , wherein said electro-dynamic exciter comprises first electrical connectors and said surface comprises second electrical connectors claim 1 , wherein said second electrical connectors are arranged for receiving said first electrical connectors when said clamp is securing said electro-dynamic exciter on said first flat surface in a closed position.7. The sound speaker according to claim 6 , wherein said first electrical connectors extend radially from a radial outer surface of said electro-dynamic exciter and said ...

NOMADIC DEVICE FOR CONTROLLING ONE OR MORE PORTABLE SPEAKERS

An apparatus for receiving audio data from a nomadic device is provided. The apparatus comprises a first portable speaker for being operably coupled to the nomadic device. The nomadic device receives first information indicative of a first crossover frequency for the first portable speaker and determines the first crossover frequency based on the first information. The nomadic device transmits the audio data to the first portable speaker in accordance to the first crossover frequency. The first portable speaker is configured to playback the audio data at the first crossover frequency. 1. A computer-program product embodied in a non-transitory computer readable medium that is programmed for transmitting audio data to at least one portable speaker for audio playback , the computer-program product comprising:instructions for receiving first information via a user interface, the first information being indicative of a first crossover frequency for a first portable speaker to playback audio data;instructions for wirelessly transmitting the audio data to the first portable speaker in response to receiving first information via the user interface;instructions for receiving second information via the user interface indicative of a measured distance between the first portable speaker and a second portable speaker; andinstructions for mixing audio information at a left channel and at a right channel based on the measured distance as received via the user interface.2. The computer-program product of further comprising instructions for receiving third information via the user interface claim 1 , the third information being indicative of a second crossover frequency for the second portable speaker claim 1 , wherein the second crossover frequency is different than the first crossover frequency.3. The computer-program product of further comprising instructions for determining the second crossover frequency for the second portable speaker based on the third information.4. The ...

Digital Signal Router for Vehicle Replacement Sound System

An aftermarket digital signal router that is installed in a vehicle when a factory loudspeaker system is replaced with an aftermarket loudspeaker system. The digital signal router comprises a first and a second analog signal receiver to receive at least two sources of audio from the vehicle. It also comprises a vehicle data transceiver that receives digital data from the vehicle's data network. It processes audio signals based on the data and status of the vehicle's data network and transmits the processed audio signals to an aftermarket amplifier. In some embodiments, the digital signal router is flashable with different versions of firmware so that it can work with different types of vehicle while transmitting audio that is compatible to most aftermarket amplifiers. The digital signal router is also adapted to handle potential conflict of two audio streams based on the signals of the vehicle's data network.

Reflected sound rendering using downward firing drivers

Embodiments are directed to speakers and circuits that reflect sound off a wall surface ( 114 ) to a listening location at a distance from a speaker. The reflected sound ( 103 ) provides direct audio cues to reproduce audio objects that have direct audio components without the need for direct firing speakers. The speaker comprises sideward firing drivers ( 108 ) to reflect sound off of the wall surface ( 114 ) and represents a virtual direct speaker ( 116 ). A virtual direct filter is applied to the sideward-firing driver signal to improve the perception of direct audio transmitted by the sideward firing speaker ( 108 ) to provide optimum reproduction of the reflected sound. The virtual direct filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the sideward-firing driver ( 108 ).

ACOUSTIC OUTPUT DEVICE

[Object] To provide an acoustic output device capable of reproducing a more natural stereophonic sound giving a realistic sensation regardless of the influence of individual differences in the shapes of ears or an imperfection of the recording system or the reproducing system, through a combination of an air conduction sound and a bone conduction sound produced through bone conduction. [Solution] Provided is an acoustic output device including: an air conduction sound providing unit configured to provide an air conduction sound; and a bone conduction sound providing unit configured to provide a bone conduction sound. The bone conduction sound providing unit is positioned on a portion other than near an ear of a user when worn by the user. According to the an acoustic output device, it is possible to reproduce a stereophonic sound regardless of the influence of individual differences in the shapes of ears or an imperfection of the recording system or the reproducing system. 1. An acoustic output device , comprising:an air conduction sound providing unit configured to provide an air conduction sound; anda bone conduction sound providing unit configured to provide a bone conduction sound,wherein the bone conduction sound providing unit is positioned on a portion other than near an ear of a user when worn by the user.2. The acoustic output device according to claim 1 ,wherein output timings of an audio signal supplied to the bone conduction sound providing unit and an audio signal supplied to the air conduction sound providing unit are adjusted and supplied.3. The acoustic output device according to claim 2 ,wherein the audio signal supplied to the bone conduction sound providing unit is delayed to be a predetermined time later than the audio signal supplied to the air conduction sound providing unit.4. The acoustic output device according to claim 1 ,wherein the bone conduction sound providing unit is installed at left and right mounting positions of a head of the user ...

Method and apparatus for evaluating audio device, audio device and speaker device

A method and apparatus for evaluating audio device for evaluating performance of an audio device by inputting into the audio device an audio signal having a waveform in which a plurality of waves with different frequency components are superimposed, comparing the sound waveform before the input and the sound waveform after the input, and finding the degree of conformity therebetween. An audio device is characterized in that, with sound field correction as a precondition, low-pitch ranges can be reproduced by using numerous small-diameter speakers, a single one of which is insufficient to reproduce low-pitch ranges despite good group delay characteristic, and outstanding waveform reproducibility can be achieved by covering the periphery of the speakers with sound-absorbent material so as to remove noise emitted by surfaces other than the front surface of cone paper.

Configuration Method of Audio Equipment and Audio Equipment

An configuration method of audio equipment includes, a first step of preparing a plurality of configuration data sets; a second step of receiving, from a user, selection of one output configuration from among a plurality of output configurations; a third step of receiving, from the user, selection of one input configuration from among input configurations restricted by the selected one output configuration; a fourth step of selecting one amplifier mode from among a plurality of amplifier modes based on the selected one output configuration and the selected one input configuration; and a fifth step of selecting a configuration data set corresponding to the selected one amplifier mode, and applying the selected configuration data set to signal processing to be performed by the signal processor. 1. A configuration method of audio equipment ,the audio equipment including a signal processor, which is connected to n input devices and m output devices, where n is an integer of 1 or more and m is an integer of 1 or more,the configuration method of audio equipment comprising:a first step of preparing a plurality of configuration data sets;a second step of receiving, from a user, selection of one output configuration from among a plurality of output configurations;a third step of receiving, from the user, selection of one input configuration from among input configurations restricted by the selected one output configuration;a fourth step of selecting one amplifier mode from among a plurality of amplifier modes based on the selected one output configuration and the selected one input configuration; anda fifth step of selecting a configuration data set corresponding to the selected one amplifier mode, and applying the selected configuration data set to signal processing to be performed by the signal processor.2. The configuration method of audio equipment according to claim 1 , wherein each of the plurality of configuration data sets defines a path of a sound signal from the n ...

CROSSTALK CANCELLATION FOR SPEAKER-BASED SPATIAL RENDERING

In some examples, crosstalk cancellation for speaker-based spatial rendering may include perceptually smoothing head-related transfer functions (HRTFs) corresponding to ipsilateral and contralateral transfer paths of sound emitted from first and second speakers to corresponding first and second destinations. The crosstalk cancellation may further include inserting an inter-aural time difference in the perceptually smoothed HRTFs corresponding to the contralateral transfer paths. A crosstalk canceller may be generated by inverting the perceptually smoothed HRTFs corresponding to the ipsilateral transfer paths and the perceptually smoothed HRTFs corresponding to the contralateral transfer paths including the inserted inter-aural time difference. 1. An apparatus comprising:a processor; and perceptually smooth head-related transfer functions (HRTFs) corresponding to ipsilateral and contralateral transfer paths of sound emitted from first and second speakers to corresponding first and second destinations;', 'insert an inter-aural time difference in the perceptually smoothed HRTFs corresponding to the contralateral transfer paths; and', 'generate a crosstalk canceller by inverting the perceptually smoothed HRTFs corresponding to the ipsilateral transfer paths and the perceptually smoothed HRTFs corresponding to the contralateral transfer paths including the inserted inter-aural time difference., 'a non-transitory computer readable medium storing machine readable instructions that when executed by the processor cause the processor to2. The apparatus according to claim 1 , wherein the perceptual smoothing includes phase and magnitude smoothing claim 1 , or complex smoothing of the HRTFs.3. The apparatus according to claim 1 , whereinthe first and second destinations correspond to first and second ears of a user, andthe inter-aural time difference is determined as a function of a head radius of the user, and an angle of one of the speakers from a median plane of a device ...

SOUND REPRODUCTION DEVICE AND SOUND REPRODUCTION SYSTEM

A sound reproduction device that includes: a sound reproduction control circuit configured to perform a required computation on audio source data so as to generate sound reproduction data to send to a speaker; a first communication interface circuit configured to perform communication with a control device; a counter circuit whose count operation is controlled by a control signal received from the control device through the first communication interface circuit, and configured to output a state of the count operation; and an error control circuit configured to stop generation of the sound reproduction data by the sound reproduction control circuit based on the state of the count operation. 1. A sound reproduction device comprising:a sound reproduction control circuit configured to perform a required computation on audio source data so as to generate sound reproduction data to send to a speaker;a first communication interface circuit configured to perform communication with a control device;a counter circuit whose count operation is controlled by a control signal received from the control device through the first communication interface circuit, and configured to output a state of the count operation; andan error control circuit configured to stop generation of the sound reproduction data by the sound reproduction control circuit based on the state of the count operation.2. The sound reproduction device of claim 1 , wherein:the control signal includes a start signal to start count operation, and a reset signal to reset count operation subsequent to the start signal; andin cases in which the state of the count operation is an overflow occurring as a result of the reset signal not having been received by the counter circuit, the error control circuit stops generation of the sound reproduction data by the sound reproduction control circuit.3. The sound reproduction device of claim 2 , wherein:the control device includes a second communication interface circuit ...

Augmenting mobile computing device audio output via vibration elements

Embodiments of the invention utilize one or more vibration elements to enhance the audio output of a computing device. These vibration element(s) may comprise any conventional vibrating element including a mass element (i.e., counterweight) electrically driven via an actuator to produce the vibrations. The size of the mass element/counterweight may be selected based on the desired strength and frequency for the vibration components (i.e., lower frequencies may utilized larger/heavier mechanisms). Computing devices may process audio data and separately output some of the data for speakers (higher frequency data), and some of the data for vibration elements (lower frequency data). The surface where the device is placed creates a sounding board structure and the vibration elements generate the sensation of physical motion at low, sub-bass and sub-audio frequencies. This physical motion may be perceived by the user as low-frequency audio data, thereby enhancing the audio output of the speakers.

Methods and systems to provide automatic configuration of wireless speakers

An apparatus is described that includes an AV receiver with a wireless audio module (WAM) host. The apparatus further includes a plurality of wireless speakers each having a WAM device to enable bi-directional communications with the WAM host. The apparatus further includes a wireless input/output device or a plurality of wireless input/output devices embedded in speakers to enable bidirectional communications with the WAM host in order to automatically configure the plurality of wireless speakers to optimize audio parameters of the wireless speakers. The automatic configuration includes determining a location for each speaker in order to identify each speaker. The automatic configuration further includes setting time delay parameters for each speaker. The automatic configuration further includes setting volume parameters for each speaker.

Method of frequency assignment of a wireless radio transmission system and a wireless radio audio transmission system

There is provided a method of frequency assignment of wireless radio audio transmission systems having a plurality of wireless transmitters and at least one wireless receiver. The wireless transmitters can represent first wireless transmitters which in the switched-on condition can approach another wireless transmitter below an established minimum spacing and second wireless transmitters which in the switched-on condition cannot approach below the minimum spacing. The wireless transmitters serve for example to transmit an audio signal wirelessly to the at least one wireless receiver. The transmission frequencies of the first wireless transmitters are assigned having regard to possible intermodulation effects. The transmission frequencies of the second wireless transmitters are assigned having regard to the relative spatial distances of the second wireless transmitters relative to each other. 1. A method for assigning frequencies to a wireless radio audio transmission system having (1) a plurality of wireless transmitters which each have at least one non-linear transmitting amplifier , and (2) at least one wireless receiver , comprising:wirelessly transmitting audio signals from at least one wireless transmitter of the plurality of wireless transmitters to the at least one wireless receiver;establishing first wireless transmitters of the plurality of wireless transmitters which each, in a switched-on condition, can approach another wireless transmitter below an established minimum spacing;establishing second wireless transmitters which each, in a switched-on condition, cannot approach another wireless transmitter below the minimum spacing;assigning first transmission frequencies to the first wireless transmitters, having regard to possible intermodulation effect; andassigning second transmission frequencies to the second wireless transmitters, having regard to relative positions of the second wireless transmitters relative to each other.2. The method as set forth ...

Equalization of Speaker Arrays

Methods and apparatus are described by which equalization and/or bass management of speakers in a sound reproduction system may be accomplished. 122-. (canceled)23. A computer-implemented method for use with a sound reproduction system including a plurality of speakers and one or more sub-woofers , the method comprising , for each of the speakers:using one or more computing devices, assigning a subset of the one or more sub-woofers to which low-frequency energy associated with the speaker below a cut-off frequency is to be directed; andusing the one or more computing devices, determining a portion of the associated low-frequency energy to be directed to each of the assigned one or more sub-woofers with reference to one or more distances between the speaker and each of the assigned one or more sub-woofers.24. The method of wherein the one or more sub-woofers are assigned to each speaker based on a spatial relationship with the speaker.25. The method of further comprising excluding a particular sub-woofer from the subset of sub-woofers assigned to a particular speaker where the determined portion of the low-frequency energy associated with the particular speaker to be directed to the particular sub-woofer is below a threshold.26. The method of wherein the portion of the low-frequency energy associated with a particular speaker to be directed to a particular one of the assigned sub-woofers is determined with reference to an exponential power of a Euclidean distance between the particular speaker and the particular assigned sub-woofer.27. The method of further comprising claim 23 , for each of the speakers claim 23 , determining the one or more distances between the speaker and each of the assigned sub-woofers with reference to a room configuration file representing a listening environment in which the speakers and sub-woofers are deployed.28. The method of wherein the subset of sub-woofers assigned to a particular one of the speakers includes all of the sub-woofers of ...

Phase Independent Surround Speaker

A speaker is disclosed that can be positioned as either a right or left front surround or a right or left rear surround in any surround sound system. The speaker includes a housing including a first driver, a second driver, a third driver, and a fourth driver. A high pass filter is connected with the first and third drivers and the first and third drivers are wired having opposite polarities from one another such that the first driver is out of phase with the third driver by 180 degrees. A low pass filter is connected with a lattice filter, wherein the low pass filter is configured to shift a phase of an input signal −90 degrees and the lattice filter is configured to shift the phase by adding +45 degrees thereby forming a −45 degree phase shift. An output of the lattice filter is connected with the second and fourth drivers.

DISPLAY DEVICE AND SURROUND SOUND SYSTEM

A display device is provided to adjust sound balance between an internal speaker of the display device and an external speaker connected with the display device such that a user effectively feels a 3D sound effect. The display device includes a display, an audio output unit configured to output a sound, a wireless communication unit connected with at least one external speaker, and a controller configured to adjust speaker balance between the sound output from the audio output unit and a sound output from the external speaker. 1. A display device comprising:a display;an internal audio output configured to output audio;a wireless communication unit configured to communicate with at least one external audio output device; anda controller configured to adjust a speaker balance between the audio output by the internal audio output and audio output by the at least one external audio output device.2. The display device of claim 1 , wherein the controller is further configured to adjust the speaker balance by adjusting an output volume of the external audio output device.3. The display device of claim 2 , wherein the controller is further configured to:transmit, to the external audio output device via the wireless communication unit, a signal for lowering the output volume of the external audio output device such that a level of the audio output by the internal audio output is greater than a level of the audio output by the external audio output device; andtransmit, to the external audio output device via the wireless communication unit, a signal for raising the output volume of the external audio output device such that the level of the audio output by the internal audio output is less than the level of the audio output by the external audio output device.4. The display device of claim 1 , wherein the controller is further configured to adjust the speaker balance by adjusting a pulse code modulation (PCM) signal transmitted to the external audio output device.5. The ...

METHOD AND APPARATUS FOR PLAYING AUDIO BY MEANS OF PLANAR ACCOUSTIC TRANSDUCERS

Apparatus and method for playing music by means of planar acoustic transducers adapted to optimize the music emission quality. 116-. (canceled)17. A method for optimized music playing by means of planar acoustic transducers comprising:supplying a first electric audio signal;providing a plurality of planar acoustic speakers adapted to convert input electric audio signals into output acoustic signals;providing a plurality of audio filters adapted to filter in frequency said first electric audio signal so as to output a second electric audio signal comprising a limited frequency band with respect to the frequency band of said first electric audio signal;providing a surface adapted to house said plurality of planar acoustic speakers;electrically connecting said first electric audio signal to the input of each of said audio filters of said plurality of audio filters and connecting the output of each of said audio filters to said plurality of audio filters at the input of an acoustic speaker of said plurality of acoustic speakers;locating, on said surface, a plurality of surface portions of number equal to the number of said acoustic transducers so that the size of one of said surface portions is greater than the other surface portions, said plurality of surface portions comprising a first surface portion, a second surface portion adjacent to said first surface portion, a third surface portion adjacent to said second surface portion;mechanically connecting said planar acoustic speakers to said surface, one for each of said surface portions, so that the larger size surface portion is associated with the acoustic speaker connected to the audio filter of said plurality of audio filters having the lowest frequency band, characterized in that said method further comprises:arranging a first acoustic speaker, connected to the low frequency audio filter, substantially in central position with respect to the area of said first surface portion;arranging a second acoustic speaker, ...

ELECTROACOUSTIC TRANSDUCER

An electroacoustic transducer includes a dynamic speaker that generates a first acoustic sound, and a piezoelectric speaker that generates a second acoustic sound. The sum of the sound pressures of the first and second acoustic sounds in a crossover frequency range of the sound pressure of the first acoustic sound and the sound pressure of the second acoustic sound, is adjusted to be equal to or greater than 0.5 times the sound pressure of the first acoustic sound in the crossover frequency range so as to improve the acoustic properties in the crossover frequency range. 1. An electroacoustic transducer comprising:a dynamic speaker that generates a first acoustic sound; anda piezoelectric speaker that generates a second acoustic sound;wherein a sum of sound pressures of the first and second acoustic sounds in a crossover frequency range of a sound pressure of the first acoustic sound and a sound pressure of the second acoustic sound, is equal to or greater than 0.5 times the sound pressure of the first acoustic sound in the crossover frequency range.2. The electroacoustic transducer according to claim 1 , wherein the sum of sound pressures of the first and second acoustic sounds in the crossover frequency range is equal to or greater than one times the sound pressure of the first acoustic sound in the crossover frequency range.3. The electroacoustic transducer according to claim 1 , wherein:the piezoelectric speaker has a circular vibration plate; anda diameter of the vibration plate is 10 mm or less.4. The electroacoustic transducer according to claim 2 , wherein:the piezoelectric speaker has a circular vibration plate; anda diameter of the vibration plate is 10 mm or less.5. An electroacoustic transducer comprising:a dynamic speaker that generates a first acoustic sound; anda piezoelectric speaker that generates a second acoustic sound;{'sub': 1', '2', '1', '2, 'claim-text': {'br': None, 'sub': 1', '2', '1', '2, 'sup': 2', '2', '1/2, 'α≡{(cos θ+cos θ)+(sin θ+sin ...

SOUND OUTPUT DEVICE, SOUND OUTPUT SYSTEM, AND CONTROL METHOD THEREOF

Sound output devices, output systems and methods are provided. The sound output device includes a speaker; a communicator configured to perform communication with an external speaker and a content source that provides sound content to the external speaker; and a processor configured to recognize the external speaker in response to the device entering into a predetermined range from the external speaker, to perform pairing with the external speaker, to receive information about the content source from the external speaker, to receive the sound content from the content source based on the information about the content source, and to output the received sound content through the speaker. 1. A sound output device comprising:a speaker;a transceiver; and control, based on the sound output device being positioned within a predetermined range from a plurality of external speakers, the transceiver to perform pairing with an external speaker closest to the sound output device; and', request the content source to transmit a portion of a sound content, which is output by the paired external speaker;', 'receive the requested sound content from the content source; and', 'control the speaker to output the portion of the sound content output by the paired external speaker., 'control the transceiver to perform pairing with a content source based on information about the content source received from the paired external speaker to], 'a processor configured to2. The sound output device as claimed in claim 1 , wherein the processor is configured to control claim 1 , based on pairing with the external speaker closest to the sound output device claim 1 , the transceiver to receive connection information about the content source from the paired external speaker and to perform pairing with the content source based on the received connection information.3. The sound output device as claimed in claim 1 , wherein the processor is configured to claim 1 , based on the sound output device ...

VEHICLE BASED ACOUSTIC ZONING SYSTEM FOR SMARTPHONES

An acoustic zoning system for a vehicle includes one or more speakers mounted in the vehicle, and a zoning control module that establishing one or more smartphone usage zones in the vehicle. The zoning control module includes a smartphone detection module operable to detect an audible interaction with a smartphone of at least one of a plurality of occupants of the vehicle, and a speaker control module operable to control at least one of the one or more speakers to substantially acoustically isolate the one of the plurality of occupants from another of the plurality of occupants of the vehicle. 1. An acoustic zoning system for a vehicle comprising: a smartphone detection module operable to detect an audible interaction with a smartphone of at least one of a plurality of occupants of the vehicle; and', 'a speaker control module operable to control at least one of the one or more speakers to substantially acoustically isolate the one of the plurality of occupants from others of the plurality of occupants of the vehicle., 'a zoning control module for establishing one or more smartphone usage zones in the vehicle, the zoning control module comprising, 'one or more speakers mounted in the vehicle; and'}2. The acoustic zoning system according to claim 1 , further comprising: a microphone arranged in the vehicle for receiving audio signals.3. The acoustic zoning system according to claim 2 , wherein the zoning control module includes a microphone control module operable to filter audio passing into the microphone.4. The acoustic zoning system according to claim 2 , wherein the smartphone detection module is operatively connected to the microphone claim 2 , the smartphone detection module being operable to identify a smartphone conversation based on audio signals received at the microphone.5. The acoustic zoning system according to claim 2 , further comprising: a pairing system operable to pair a smartphone with one or more vehicle systems claim 2 , the smartphone detection ...

Crosstalk Cancellation B-Chain

Embodiments relate to b-chain processing for a spatially enhanced audio signal. A system includes a b-chain processor. The b-chain processor determines asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position; and generates a left output channel for the left speaker and a right output channel for the right speaker by: applying an N-band equalization to the spatially enhanced signal to adjust for the asymmetry in the frequency response; applying a delay to the spatially enhanced signal to adjust for the asymmetry in the time alignment; and applying a gain to the spatially enhanced signal to adjust for the asymmetry in the signal level. 1. A system for enhancing an input audio signal for a left speaker and a right speaker , comprising: determine asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position; and', applying an N-band equalization to the input audio signal to adjust for the asymmetry in the frequency response;', 'applying a delay to the input audio signal to adjust for the asymmetry in the time alignment; or', 'applying a gain to the input audio signal to adjust for the asymmetry in the signal level., 'generate a left output channel for the left speaker and a right output channel for the right speaker by at least one of], 'a processing circuitry configured to2. The system of claim 1 , wherein the processing circuitry is configured to apply the N-band equalization by applying one or more filters to at least one of a left channel or a right channel of the input audio signal.3. The system of claim 2 , wherein the one or more filters balance frequency responses of the left speaker and the right speaker.4. The system of claim 2 , wherein the one or more filters include at least one of:a low-shelf filter and a high shelf filter;a band-pass filter;a band-stop filter;a peak-notch filter; anda low-pass ...

SOUND REPRODUCTION DEVICE

The sound reproduction device is applied to an acoustic space such as a passenger compartment, and controls the levels of the reproduced sounds at two evaluation points set at the seats in the passenger compartment, for example. Specifically, the sound reproduction device controls the phase of the one channel sound signal inputted from external and supplies it to the pair of speakers. The phase control is performed such that the sum of reproduced sound levels at the two evaluation points becomes larger than the sum of the reproduced sound levels at the two evaluation points in a case where the sound signal is reproduced by only one of the pair of speakers, in an entire audible band

Media Content Based on Playback Zone Awareness

Systems and methods are provided for providing audio content based on playback zone awareness. In an example implementation, a computing system receives, via one or more network interfaces, zone data that identifies a particular zone of a media playback system, where the zone data indicates a selection of the particular zone, and where the particular zone includes one or more playback devices. The computing system identifies audio content based on the zone data. Identifying audio content based on the zone data may involve determining that particular audio content is preferred in the particular zone and identifying audio content corresponding to the particular audio content that is preferred in the particular zone. After identifying the audio content, the computing system provides an indication of the identified audio content to the media playback system. 1. A method comprising:receiving, via a computing system associated with a service provider, zone data that identifies a particular zone of a media playback system, wherein the zone data indicates a selection of the particular zone, and wherein the particular zone includes one or more playback devices;identifying, via the computing system, audio content based on the zone data, wherein identifying audio content based on the zone data comprises determining that particular audio content is preferred in the particular zone and identifying audio content corresponding to the particular audio content that is preferred in the particular zone; andproviding, via the computing system, an indication of the identified audio content to the media playback system.2. The method of claim 1 , wherein determining that particular audio content is preferred in the particular zone comprises determining that playback of a particular genre of audio content is preferred in the particular zone claim 1 , and wherein identifying audio content corresponding to the particular audio content that is preferred in the particular zone comprises ...

Media Content Request Including Zone Name

In an example implementation, a media playback system receives input data indicating selection of a particular zone, where the media playback system includes one or more zones, and where the one or more zones include respective playback devices. The media playback system sends, to a service provider, (i) zone data that identifies the particular zone of the media playback system, wherein the zone data indicates that the particular zone is selected and (ii) a request to identify audio content based on the zone data and receives, from the service provider, an indication of audio content identified based on the zone data. 1. A media playback system comprising one or more playback devices and one or more control devices , the media playback system configured to perform a method comprising:receiving input data indicating selection of a particular zone, wherein the media playback system comprises one or more zones, and wherein the one or more zones comprise respective playback devices;sending, to a service provider, (i) zone data that identifies the particular zone of the media playback system, wherein the zone data indicates that the particular zone is selected and (ii) a request to identify audio content based on the zone data; andreceiving, from the service provider, an indication of audio content identified based on the zone data.2. The media playback system of claim 1 , wherein receiving claim 1 , from the service provider claim 1 , the indication of audio content identified based on the zone data comprises receiving claim 1 , via the one or more control devices claim 1 , metadata identifying one or more audio items identified based on the zone data claim 1 , and wherein the method further comprises causing a graphical interface to display the metadata identifying the one or more audio items.3. The media playback system of claim 1 , wherein receiving claim 1 , from the service provider claim 1 , the indication of audio content identified based on the zone data ...

COMMUNICATION APPARATUS AND SOUND PLAYING METHOD THEREOF

A communication apparatus and a sound playing method thereof are provided. The method is adapted for a communication apparatus having a first speaker used as an earpiece and a second speaker, in which the first speaker and the second speaker are disposed at opposite sides of the communication apparatus. In the method, an event with a sound notification is detected. A left channel sound and a right channel sound of the sound notification are mixed to generate a mixed sound in response to detecting the event. The mixed sound is played by the first speaker with a fade-in effect. 1. A sound playing method , adapted for a communication apparatus having a first speaker used as an earpiece and a second speaker , the first speaker and the second speaker being disposed at opposite sides of the communication apparatus , comprising:detecting an event with a sound notification;mixing a left channel sound and a right channel sound of the sound notification to generate a mixed sound in response to detecting the event; andplaying the mixed sound by the first speaker with a fade-in effect.2. The method according to claim 1 , further comprising:playing the mixed sound by the second speaker without the fade-in effect.3. The method according to claim 1 , wherein before the step of detecting the event with the sound notification claim 1 , the method further comprises:playing one of the left channel sound and the right channel sound of an audio by the first speaker and playing the other one of the left channel sound and the right channel sound of the audio by the second speaker.4. The method according to claim 3 , wherein after the step of playing the mixed sound by the first speaker with the fade-in effect and playing the mixed sound by the second speaker without the fade-in effect claim 3 , the method further comprises:returning to play the one of the left channel sound and the right channel sound of the audio by the first speaker and play the other one of the left channel sound and ...

Outdoor speaker assembly and system

A speaker assembly broadly comprising a housing, an input circuit, and a number of speakers. The housing includes a lower section configured to be positioned at least partially below a ground surface and an upper section extending upwards from the lower section. The input circuit receives audio signals from a sound system or other controller and actively or passively sends the audio signals to the speakers. The speakers include a low-range speaker positioned in the lower section of the housing and a relatively higher-range speaker positioned in the upper section. The speaker assembly is configured to be spaced from other speaker assemblies within a listening area with each speaker assembly generating low frequency soundwaves and relatively higher-frequency soundwaves. This reduces or eliminates out-of-phase crossover frequency wave cancellation effects within the listening area.

Space Shaded Constant Beamwidth Transducer

A loudspeaker described herein have a radiation pattern which is constant over a wide frequency range without requiring any attenuation. The system includes plurality of drivers not uniformly arranged so that the relative velocity of the speaker follows the Legendre shading function. By making the driver density proportional to the Legendre function SSCBT allows each driver to play at max volume. The purpose behind Space Shaded Constant Beamwidth Transducer (SSCBT) is to replace attenuation with incremental spacing between the drivers. Alternatively, the angles each driver is placed by doubling the distance each driver is placed to accomplish the region which is 3 db lower. When the distance is doubled, the angle between each driver increases the further from 0 it is and is consistent with the Legendre function on its surface. 1. The Space Shaded Constant-Beamwidth Transducer (SSCBT) system comprising:plurality of drivers not uniformly arranged so that the relative velocity of the speaker follows the Legendre shading function,wherein the driver density is proportional to the Legendre function which SSCBT allows each driver to play at max volume,wherein in SSCBT system the attenuation is not required, and attenuation is replaced with incremental spacing between the drivers.3. The Space Shaded Constant-Beamwidth Transducer (SSCBT) system of claim 1 , wherein number of drivers in an SSCBT comes out to number of drivers in a CBT multiplied by 0.7084 claim 1 , hence requiring less drivers.4. The Space Shaded Constant-Beamwidth Transducer (SSCBT) system of claim 1 , wherein the space between the drivers drivers can be determined by observing the relative driver density and equating that to the velocity formula for a specific driver in the system.6. The method of Space Shaded Constant-Beamwidth Transducer (SSCBT) comprising:plurality of drivers not uniformly arranged so that the relative velocity of the speaker follows the Legendre shading function,wherein the driver ...

SYSTEM AND METHOD FOR DELIVERING FULL-BANDWIDTH SOUND TO AN AUDIENCE IN AN AUDIENCE SPACE

A system and method for delivering full-bandwidth sound to an audience in an audience space located in front of an acoustically reflective image screen such as a plasma, LCD, LED, or OLED screen. The sound delivery system provides for two separate and spatially displaced sound sources, namely, a high frequency loudspeaker for reproducing high frequency components of the sound associated with images displayed on the acoustically reflective image screen, and a separate low frequency loudspeaker for reproducing low frequency components of the image-associated sound. The high frequency loudspeaker or loudspeakers are positioned in front of the image screen to direct the high frequency components of the sound at the image screen where it is reflected back into the audience space, whereas the low frequency loudspeaker or loudspeakers are positioned at or about the acoustically reflective image screen and direct the low frequency components of the sound toward the audience space which are time-aligned with the high frequency components. 1. A system for delivering full-bandwidth sound to an audience in an audience space located in front of an acoustically reflective image screen , wherein the acoustically reflective image screen displays one or more static or moving images viewed by the audience and wherein the full-bandwidth sound delivered to the audience is spatially and contextually associated with the images displayed on the image screen , the system comprising:one or more high frequency loudspeakers for reproducing high frequency components of the sound associated with the images displayed on the acoustically reflective image screen,one or more low frequency loudspeakers reproducing low frequency components of the sound associated with the images on the acoustically reflective image screen,a cross-over for splitting a full-bandwidth audio input signal into high and low audio signal inputs for, respectively, the one or more high frequency loudspeakers and one or more ...

Calibration of a distributed sound reproduction system

A method for calibrating a distributed audio reproduction system, including a set of N heterogeneous loudspeakers controlled by a server. This method includes the following steps: a) placing a microphone in front of a first loudspeaker of the set; b) capturing), by the microphone, a calibration signal sent to tile loudspeaker at a first time and reproduced by same; c) capturing, by the microphone, the calibration signal sent with a known time delay to the N−1 other loudspeakers of the set and reproduced by these N−1 loudspeakers; d) capturing, by the microphone, the calibration signal sent to the first loudspeaker at a second time and reproduced again by same; e) repeating steps a) to d) for the N loudspeakers of the set; f) determining a plurality of heterogeneity factors to be corrected for the set of N loudspeakers by analysing the data thus captured; g) correcting the determined heterogeneity factors. 1. A method for calibrating a distributed audio rendering system , comprising a set of N heterogeneous speakers controlled by a server , the method comprising the following steps:a) placing a microphone in front of a first speaker of the set;b) capturing, by using the microphone, a calibration signal sent to the first speaker at a first time and rendered by this speaker;c) capturing, by using the microphone, the calibration signal sent with a known time shift to the N−1 other speakers of the set and rendered by these N−1 speakers;d) capturing, by using the microphone, the calibration signal sent to the first speaker at a second time and rendered again by this speaker;e) iterating steps a) to d) for the N speakers of the set;f) determining a plurality of heterogeneity factors to be corrected for the set of the N speakers by analyzing the calibration signals thus captured;g) correcting the determined heterogeneity factors.2. The method as claimed in claim 1 , wherein the heterogeneity factors form part of a list from among:a clock coordination of the speakers ...

ELECTRONIC DEVICE

An electronic device is provided. The electronic device can include one or more protrusions and a casing. The casing can be shaped and dimensioned to carry the audio output portions. The casing can include a first face, a second face and sides. The one or more protrusions can extend from any of, or any combination of, the first face, the second face and at least one of the sides. 15-. (canceled)6. An electronic device comprising:a processing portion configurable to receive and process audio input signals in a manner so as to produce audio output signals, the audio input signals being associable with audio characteristics and a plurality of frequency ranges; anda plurality of audio output portions coupled to the processing portion such that audio output signals are communicable to the audio output portions from the processing portion for output, one of vary and control at least a portion of the audio characteristics of the audio input signals; and', 'one of vary and control output of audio output signals,', impeding output of at least one of the plurality of frequency ranges via at least a portion of the audio output portions; and', 'allowing output of only at least one of the plurality of frequency ranges via at least a portion of the audio output portions., 'wherein output of audio output signals is one of controlled and varied in the context of at least one of], 'wherein the electronic device is positionable in at least a first orientation and a second orientation, and based on change in orientation to the second orientation when the electronic device is initially positioned in the first orientation, the processing portion is further configurable to at least one of7. The electronic device as in wherein output of audio output signals is one of controlled and varied in the context of channel output of audio output signals when the audio output signals are associable with at least one of left channel output audio characteristics and right channel output audio ...

DIRECTIONAL PROPAGATION METHOD AND APPARATUS FOR AUDIO SIGNAL, A TERMINAL DEVICE AND A STORAGE MEDIUM

The present disclosure discloses a directional propagation method and apparatus for audio signal, a terminal device and a storage medium. The method comprises acquiring a current location of a target user and audio data corresponding to the target user; propagating audio signal corresponding to said audio data towards said current location in a directional manner. By acquiring a current location of a target user in real time, this technical solution dynamically adjusts the audio data corresponding to the target user to be propagated in a directional manner towards said current location, wherein different audio data types (e.g. Chinese language audio or English language audio) may correspond to different target users, in such a way, it can be realized that different audio signals are propagated in a directional manner towards different locations. 1. A directional propagation method for audio signal , comprising:acquiring a current location of a target user and audio data corresponding to the target user; andpropagating audio signal corresponding to said audio data towards said current location in a directional manner.2. The directional propagation method for audio signal of claim 1 , wherein claim 1 , the step of propagating audio signal corresponding to said audio data towards said current location in a directional manner comprises:calculating a current distance between a speaker and the target user according to said current location;determining a sound production power for the speaker according to said current distance; andpropagating audio signal corresponding to said audio data towards said current location in a directional manner with said sound production power.3. The directional propagation method for audio signal of claim 2 , wherein claim 2 , the step of determining a sound production power for the speaker according to said current distance comprises:increasing the sound production power along with the increase of said current distance.4. The directional ...

METHODS AND APPARATUS TO FACILITATE TIME SYNCHRONIZATION OF AUDIO OVER BLUETOOTH LOW ENERGY

Example methods and apparatus to facilitate time synchronization of audio over Bluetooth Low Energy are disclosed herein. An apparatus includes a packet processor to process a data packet to identify a timestamp encoded in the data packet; a buffer to store the data packet with the timestamp; and a host to: when the data packet is removed from the buffer, initiate a timer; and when the timer reaches a time corresponding to a sum of the timestamp and a presentation delay time, out the data packet to render the data packet. 1. An apparatus to facilitate time synchronization of audio , the apparatus comprising:a packet processor to process a data packet to identify a timestamp encoded in the data packet;a buffer to store the data packet with the timestamp; and when the data packet is removed from the buffer, initiate a timer; and', 'when the timer reaches a time corresponding to a sum of the timestamp and a presentation delay time, out the data packet to render the data packet., 'a host to2. The apparatus of claim 1 , wherein the packet processor is to decode the timestamp from a header of the data packet.3. The apparatus of claim 1 , wherein the host is to remove the data packet from the buffer when a threshold amount of data packets have been stored in the buffer.4. The apparatus of claim 1 , wherein the timestamp is derived from a host clock of a master device.5. The apparatus of claim 1 , further including a first clock synchronized to a host clock of a master device.6. The apparatus of claim 1 , wherein the data packet is a first data packet claim 1 , the packet processor to process a second data packet to identify the presentation delay time.7. The apparatus of claim 1 , wherein rending the data packet includes outputting a payload corresponding to the data packet to a speaker.8. A method to facilitate time synchronization of audio claim 1 , the method comprising:processing, by executing an instruction with one or more processors, a data packet to identify a ...

WIRELESS SPEAKER SYSTEM AND WIRELESS DATA TRANSMISSION METHOD

A wireless speaker system is provided. The system includes at least one main light emitting diode (LED) lighting device including a Bluetooth module and a wireless audio module. The system also includes at least one auxiliary LED lighting device including a wireless audio module. Further, the system includes a smart terminal configured to send data to the main LED lighting device through a Bluetooth protocol. The wireless audio module in the main LED lighting device transmits the data to the auxiliary LED lighting device. The auxiliary LED lighting device sends feedback data to the smart terminal through the main LED lighting device. 1. A wireless speaker system , comprising:at least one main light emitting diode (LED) lighting device including a Bluetooth module and a wireless audio module;at least one auxiliary LED lighting device including a wireless audio module; anda smart terminal configured to send data to the main LED lighting device through a Bluetooth protocol, wherein the wireless audio module in the main LED lighting device transmits the data to the auxiliary LED lighting device, and the auxiliary LED lighting device sends feedback data to the smart terminal through the main LED lighting device.2. The system according to claim 1 , wherein the data transmitted between the smart terminal and the main LED lighting device includes audio data and control data.3. The system according to claim 2 , wherein the audio data is transmitted through Advanced Audio Distribution Profile (A2DP).4. The system according to claim 2 , wherein the control data is transmitted through Serial Port Profile (SPP).5. The system according to claim 1 , wherein the smart terminal is one of a mobile phone claim 1 , a tablet personal computer claim 1 , a desktop computer claim 1 , an Ultrabook claim 1 , a smart TV and a cloud server.6. A wireless data transmission method using at least one main LED lighting device and at least one auxiliary LED lighting device claim 1 , comprising: ...

Portable Entertainment System

A portable entertainment system that provides quality sound equipment and multiple entertainment interfaces has a first module and a second module that can be operated together or separately. The first module has a first console for running software and a first screen for displaying software interfaces. Additionally, the first module has a first mix on for mixing and editing music. Similarly, the second module has a second console for running software and a second screen for displaying software interfaces. Additionally, the second module has a second mix on for mixing and editing music. A docking station allows an electronic device to be connected for directly playing music through a pair of speakers that are removably attached to a main unit, such that the pair of speaker can be optimally positioned. The first screen and the second screen are similarly removably attached to the main unit offering remote viewing capabilities. 1. A portable entertainment system comprises:a first module comprises a first screen, a first console, and a first mix on;a second module comprises a second screen, a second console, and a second mix on;the first mix on and the second mix on being adjacently connected to a main unit;a docking station being positioned in between the first mix on and the second mix on;the docking station being electronically connected to the first console and the second console;the first mix on being electronically connected to the first console;the second mix on being electronically connected to the second console;the first screen being communicably coupled to the first console;the second screen being communicably coupled to the second console;the first screen, the second screen, and a pair of speakers being adjacently attached to the main unit;each of the pair of speakers being positioned opposite each other along the main unit;the first mix on being positioned adjacent to the first screen; andthe second mix on being positioned adjacent to the second screen.2. ...

Playback Device Calibration

A first subwoofer may be configured to output multimedia content in synchrony with at least one other playback device and a second subwoofer. The first subwoofer may, based on a received indication of an acoustic characteristic of the at least one other playback device, determine a crossover frequency of (i) the first subwoofer and the second subwoofer and (ii) the at least one other playback device. After determining the crossover frequency, the first subwoofer may output a first tone set and a second tone set in synchrony with the second subwoofer and the at least one other playback device, and after outputting the first tone set and the second tone set, receive, from a controller device, an indication of a selected one of the first tone set or the second tone set. Based on the selected tone set, the first subwoofer may adjust a phase setting of the first subwoofer. 1. A first subwoofer comprising:at least one processor;non-transitory computer-readable medium; andprogram instructions stored on the non-transitory computer-readable medium that are executable by the at least one processor such that the first subwoofer is configured to:receive an instruction to pair with at least one other playback device that such that the first subwoofer is configured to output multimedia content in synchrony with the at least one other playback device and a second subwoofer;after receiving the instruction, pair with the at least one other playback device such that the first subwoofer is configured to output multimedia content in synchrony with the at least one other playback device and the second subwoofer;receive an indication of an acoustic characteristic of the at least one other playback device;based on the received indication of the acoustic characteristic of the at least one other playback device, determine a crossover frequency of (i) the first subwoofer and the second subwoofer and (ii) the at least one other playback device;after determining the crossover frequency, output ...

Crosstalk Cancellation for Stereo Speakers of Mobile Devices

Described herein is a technology related to a mobile device with a pair of stereo speakers. The mobile device has an orientation detection system that detects the orientation of the mobile device and a crosstalk cancellation system that performs crosstalk cancellation with complementary cardioid beams in response to the detected orientation of the mobile device. The mobile device also has an audio system that emits complementary cardioid sound beams from the speakers. 1. A method comprising:based on a detected orientation of a mobile device, determining a horizontal spacing between a pair of the stereo speakers of the mobile device;calculating a threshold frequency based, at least in part, on the determined horizontal spacing between the pair of speakers;obtaining an audio signal having a pair of stereo channels;determining that the audio signal includes frequencies below the calculated threshold frequency; modifying each of the stereo channels to introduce a composite signal of each channel and a time delay from the other channel;', 'emitting complementary cardioid sound beams from the pair of speakers, wherein one of the speakers produces sound based on one of the modified stereo channels while the other of the speakers produces sound based on the other of the modified stereo channels., 'in response to the determination that the audio signal includes frequencies below the calculated threshold frequency, performing crosstalk cancellation with complementary cardioid beams, which includes2. A method of claim 1 , wherein the determined horizontal spacing between the pair of the stereo speakers is a maximum horizontal spacing between the speakers when the detected orientation of the mobile device is a speaker-aligned landscape claim 1 , wherein the speaker-aligned landscape is an orientation of the mobile device where the stereo speakers are aligned on a substantially horizontal line with a maximum horizontal spacing therebetween.3. A method of claim 1 , wherein the ...