Verfahren zum Peilen schallabstrahlender oder schallreflektierender Ziele

Detecting the direction and location of noise sources

A receiving unit 12 consists of a three-dimensional acoustical array for receiving a multiplicity of sound signals 16 from different directions. The sound signals have at least one sound source of interest. A processing unit 14 consists of a beamformer 34 for identifying the elevation and azimuth of each of the sound signals, a sound database 32 containing a multiplicity of soundprints of sound sources of interest, apparatus for classifying the sound signals with the soundprints, and apparatus for providing the azimuth and elevation of each of the classified sound signals. A user interface unit 22 indicates the azimuths and elevations of the classified sound signals. The processing unit further consists of apparatus 36 for filtering extraneous noise signals. The sound sources of interest may be gun shots. The system may be mounted on a soldier's helmet (fig 4) along with a compass (78, fig 4) and inclinometer (80, fig 4) to record the orientation of the receiving unit when a shot is heard. Alternatively the system could be mounted on a light vehicle (fig 6).

Apparatus for converting an acoustic direction information in a discernible shape

Es wird eine Vorrichtung zur Erfassung und Übersetzung von Richtungs- und Geschwindigkeitseigenschaften akustischen Signale, insbesondere akustischer Unterwassersignale, bestehend aus - einem Empfangsmittel, insbesondere aufweisend zwei oder mehrere Unterwassermikrofone - Lautsprechern (3), vorzugsweise zumindest 2 Lautsprechern, - einer Regel/Steuereinheit (1) offenbart, wobei die Empfangsmittel (2) akustischen Signale erfassen, diese akustischen Signale an die Regel/Steuereinheit (1) weiterleiten und dass die Regel/Steuereinheit (1) Richtungs- und/oder Geschwindigkeitseigenschaften der akustischen Signale ermittelt und die Lautsprecher (3) derartig ansteuert, dass die Richtungs- und/oder Geschwindigkeitseigenschaften der akustischen Signale über die Lautsprecher (3) wiedergegeben werden, um die Richtungs- und/oder Geschwindigkeitseigenschaften des akustischen Signals für das menschliche Gehör zu übersetzen.

A tracking, safety and navigation system for firefighters

Vorrichtung zur Bestimmung der Schallrichtung bei Unterwassersignalisierung.

Trichterpeilgerät.

Akustisches Peilgerät mit automatischem Rechengerät zur selbsttätigen Ermittlung der wirklichen Zielrichtung.

Vorrichtung zum Anzeigen des kleinsten Abstandes zwischen Geschoss und einem sich in der Luft bewegenden Zielkörper

UAV detection

A system for detecting, classifying and tracking unmanned aerial vehicles (UAVs) comprising: at least one microphone array arranged to provide audio data; at least one camera arranged to provide video data; and at least one processor arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures; an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold.

A METHOD AND AN APPARATUS FOR OBTAINING ACOUSTIC SOURCE LOCATION INFORMATION AND A MULTIMEDIA COMMUNICATION SYSTEM

A method and an apparatus for obtaining the acoustic source location information and a multimedia communication system are provided. In the method, the acoustic source location information corresponding to the original location of lens is obtained (201) and the lens controlling information is obtained (202), and the current acoustic source location information is obtained according to the acoustic location information corresponding to the original location of lens and the controlling information of lens (203).

Sound source localization based on binaural signals

The proposed method is directed a sound source localization using a binaural detector configuration. It comprises the steps of: Preprocessing the two signals using a filter bank to gain (2D) time-frequency spectrum for each signal. Jointly calculating ITD and ILD measures using a common matching procedure working on 2D patches of the time-frequency spectrum. This results in two frequency vs. displacement matrices (one for the ITD and one for the ILD measurement) that jointly characterize the sound source. These matrices are used as a whole (all displacements and all frequencies) in the following steps. Learning the averaged frequency vs. displacement matrices for each sound source location. This is done separately for the ITD and the ILD measurements. Comparing a measured frequency vs. displacement matrix with the learned matrices to gain a probability distribution for the sound source location (for each frequency channel). This is again done both for the ITD and the ILD measurements. Combining ...

Improvements relating to methods and apparatus for guiding equipment

A TRACKING, SAFETY AND NAVIGATION SYSTEM FOR FIREFIGHTERS

An ultrasonic signal (106) is used to link a beacon unit ( 101) to a tracker unit (100) to provide a tracking and navigation system for firefighters to use in a smoke filled environment at the scene of a fire. The beacon unit transmits an omnidirectional ultrasonic signal. The tracker unit, using a directional ultrasonic receiver provides a display or other indication of the signal strength of the received signal to allow the direction to the beacon unit to be determined. The ultrasonic signal provided by the beacon unit may be pulse modulated to inlcude digitally encoded data that may be used to identify particular individuals, objects, materials, dangers, or exits. In addition, the tracker unit may be provided with a transmitter and the beacon unit provided with a receiver such that audio communication may be established therebetween.

APPARATUS FOR dIRECTION REGULATIONmORE INCIDENTALLY[...], ESPECIALLY OF uNDERWATER SOUND SIGNALS

Collaborative Location/Orientation Estimation

It is inter alia disclosed to estimate at least one of a location and an orientation of a first-type device (11) at least based on respective location estimates for one or more signal sources (10), wherein at least one location estimate for a signal source (10) of the one or more signal sources is determined at least based on respective signals from the signal source (10) received at one or more second-type devices (12) and respective locations of the one or more second-type devices (12), and respective position relationships between the one or more signal sources (10) and the first-type device (11).

METHOD FOR BEAM FORMING IN DIRECTION FINDER SYSTEMS

FLOWMETER APPARATUS

... 1371306 Acoustic velocity measurement: ultrasonic couplings WESTINGHOUSE ELECTRIC CORP 29 May 1973 [6 June 1972] 25472/73 Headings H4D and H4J - Apparatus for measuring the relative velocity between a group of probes and a fluid comprises a number of transducer stations each having a cavity in which is disposed a transducer and a coupling medium, the cavity being closed by an acoustic window, an acoustic signal path between a first and second of the stations being at a first angle with respect to the acoustic window of the first station and at a second, different. angle with respect to the acoustic window of the second station, the windows being of different materials. The apparatus of the described embodiment comprise housings (15), (16) (17) (Figs. 1, 2, not shown) in a triangular array and being connected to circuitry (20) for deriving the speed of a ship (10). A further housing 15, Fig. 6A, supports a transducer 30, coupling medium 57 and window 55. The coupling medium may be water ...

FLOWMETER APPARATUS FOR MEASURING SHIP'S SPEED

UAV DETECTION

A system (2) for detecting, classifying and tracking unmanned aerial vehicles (UAVs) (50) comprising: at least one microphone array (4) arranged to provide audio data; at least one camera (6, 8) arranged to provide video data; and at least one processor arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures; an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold.

A TRACKING, SAFETY AND NAVIGATION SYSTEM FOR FIREFIGHTERS

An ultrasonic signal (106) is used to link a beacon unit (101) to a tracker unit (100) to provide a tracking and navigation system for firefighters to use in a smoke filled environment at the scene of a fire. The beacon unit transmits an omnidirectional ultrasonic signal. The tracker unit, using a directional ultrasonic receiver provides a display or other indication of the signal strength of the received signal to allow the direction to the beacon unit to be determined. The ultrasonic signal provided by the beacon unit may be pulse modulated to inlcude digitally encoded data that may be used to identify particular individuals, objects, materials, dangers, or exits. In addition, the tracker unit may be provided with a transmitter and the beacon unit provided with a receiver such that audio communication may be established therebetween.

VERFAHREN UND VORRICHTUNG ZUM BESTIMMEN EINER SCHALLQUELLE

FLOWMETER APPARATUS

FLOWMETER APPARATUS

Method for three-dimensional beam forming in direction finding systems

For improving 3D focussing and side lobe suppression in a direction finding system identical groups of transducers are provided at each side of a first and a second axis, which are inclined by an angle 0°<> psi<180°, preferable psi=90°. A first magnitude summation signal is derived from the first pair of transducer groups associated with the first axis and a second magnitude summation signal is derived from the second pair of transducer groups associated with the second axis. Furthermore, a differential signal is derived between the complex output signal of each pair of transducers. For each axis the absolute value of said differential signal is subtracted from the associated magnitude summation signal. The resulting two output signals, associated with said two axis, are then combined to finally obtain a three-dimensionally focussed beam pattern.

FLOATING BASE VECTOR SENSOR

Systems and methods are provided for sensing acoustic signals using a floating base vector sensor. A vector sensor according to an embodiment of the present disclosure can be used to detect and characterize low frequency sound wave(s) in a viscous medium (e.g., air, water, etc.) by detecting a periodic motion of the media particles associated with the sound wave(s). The orientation of the particle velocity deduced from such measurements can provide information regarding the wave vector of the sound wave(s), can define the direction of arrival (DOA) for the acoustic signal, and can assist locating the source of the sound of interest. 1. A vector sensor , comprising:a tower comprising a plurality of flow channels, wherein the tower is configured to detect a relative displacement of viscous liquid that fills the plurality of flow channels;a retaining thread coupled to the tower; andan anchor coupled to the retaining thread.2. The vector sensor of claim 1 , wherein the tower is a floating tower submerged in water claim 1 , and wherein the anchor is anchored to an ocean floor.3. The vector sensor of claim 1 , wherein the tower is configured to be detached from the retaining thread claim 1 , thereby enabling the tower to float to a surface of a body of water.4. The vector sensor of claim 1 , wherein the tower is further configured to determine an intensity and direction of an incoming sound wave by detecting the relative displacement of viscous liquid that fills the plurality of flow channels.5. The vector sensor of claim 1 , further comprising:a plurality of flow sensors places inside respective cavities of respective flow channels in the plurality of flow channels, wherein the plurality of flow sensors are configured to detect the relative displacement of the viscous liquid that fills the plurality of flow channels.6. The vector sensor of claim 5 , wherein the anchor comprises a controller configured to control the flow sensors.7. The vector sensor of claim 5 , wherein ...

DETECTING SOUND SOURCE

Sound source localization apparatus and method

Sound source localization apparatuses and methods are described. A frame amplitude difference vector is calculated based on short time frame data acquired through an array of microphones. The frame amplitude difference vector reflects differences between amplitudes captured by microphones of the array during recording the short time frame data. Similarity between the frame amplitude difference vector and each of a plurality of reference frame amplitude difference vectors is evaluated. Each of the plurality of reference frame amplitude difference vectors reflects differences between amplitudes captured by microphones of the array during recording sound from one of a plurality of candidate locations. A desired location of sound source is estimated based at least on the candidate locations and associated similarity. The sound source localization can be performed based at least on amplitude difference.

UAV detection

LOCATION OF HIGH PRESSURE GAS LEAKS BY AN ULTRASOUND TECHNIQUE

FLOWMETER APPARATUS

APPARATUS FOR dIRECTION REGULATIONmORE INCIDENTALLY[...], ESPECIALLY OF uNDERWATER SOUND SIGNALS

AUDIO DIRECTIONAL SENSER

Sound source localization based on binaural signals

基于立体声信号的声源定位。所提出的方法旨在利用立体声检测器结构的声源定位。其包括如下步骤：利用滤波器组对两个信号进行预处理，以获得各个信号的(2D)时频谱；利用作用于时频谱的2D曲面片上的共同匹配过程来对ITD和ILD测量进行联合计算，这样就得到了联合表征该声源的两个频率对位移矩阵(一个用于ITD测量，另一个用于ILD测量)，在随后步骤中将这些矩阵作为整体(所有的位移和所有的频率)来使用；对用于各个声源位置的平均频率对位移矩阵进行学习，对于ITD和ILD测量分别进行此处理；将所测得的频率对位移矩阵与所学习的矩阵进行比较，以获得声源位置的概率分布(针对各个频道)，同样对于ITD和ILD测量进行此处理；将ITD和ILD概率分布矩阵进行组合，以获得用于声源定位的单个联合概率分布；采用信息论过程来提取声源位置的最佳预测。

Acoustic intercept reciever-combined frequency and bearing processor

A signal processor for obtaining frequency and bearing information of an ustical signal. Responsive to the acoustical signal, a multimode hydrophone generates a plurality of electrical signals which are combined to form a first omnidirectional signal and two spatially orthogonal directional signals. The directional signals are then combined to form a second omnidirectional signal. Additional circuitry is provided to analyze the two omnidirectional signals using the cross-spectral density function of the two omnidirectional signals to obtain said frequency and bearing information.

Floating Base Vector Sensor

Systems and methods are provided for sensing acoustic signals using a floating base vector sensor. A vector sensor according to an embodiment of the present disclosure can be used to detect and characterize low frequency sound wave(s) in a viscous medium (e.g., air, water, etc.) by detecting a periodic motion of the media particles associated with the sound wave(s). The orientation of the particle velocity deduced from such measurements can provide information regarding the wave vector of the sound wave(s), can define the direction of arrival (DOA) for the acoustic signal, and can assist locating the source of the sound of interest.

SYSTEM AND PROCESS OF DETECTION OF NOISE

L'invention concerne un système de détection de bruit. Ce système comprend une unité de réception (12), une unité de traitement (14), et une unité d'interface utilisateur, connectées les unes aux autres. L'unité de réception comprend un réseau acoustique tridimensionnel (24, 27) pour recevoir des signaux acoustiques (16) provenant de différentes directions d'au moins une source de son (20). L'unité de traitement comprend un filtre spatial tridimensionnel pour identifier l'altitude et l'azimut de ces signaux, une base de données sonores (32) contenant des empreintes sonores de sources de son présentant un intérêt, un appareil pour classer les signaux acoustiques avec les empreintes sonores et un appareil pour fournir l'azimut et l'altitude de ces signaux classés. A noise detection system is disclosed. This system includes a receiving unit (12), a processing unit (14), and a user interface unit, connected to each other. The receiving unit comprises a three-dimensional acoustic network (24, 27) for receiving acoustic signals (16) from different directions from at least one sound source (20). The processing unit comprises a three-dimensional spatial filter for identifying the altitude and azimuth of these signals, a sound database (32) containing sound fingerprints of sound sources of interest, an apparatus for classifying the acoustic signals with sound prints and a device to provide the azimuth and altitude of these classified signals.

ANORDNING FOR METNING AV STROMNINGSHASTIGHET

Detection and geolocation of transient signals received by multi-beamforming antenna

A bank of order statistic filters applied to a set of antenna or transducer beams are used to detect and determine the line-of-bearing to the source of transient RF (or other, e.g., acoustic) signals. By applying order statistic filters to signals received by a set of antenna or transducer beams, this system sets a detection threshold that is unaffected by transient signals, thereby allowing the detection of these transient signals. Knowing which antenna beam the transient signals are located within allows the determination of a line of bearing to the source of the transient signals.

Improvements in and relating to electrical indicating and measuring apparatus

... 974,688. Controlling and actuating by sounds. I NSTRUMENTFAB RI KSAK TIEBOLAGET LYTH. Oct. 16, 1962 [Oct. 16, 1961], No. 39133/62. Drawings to Specification. Heading H4D. The distance and direction of flight of a projectile relative to a target are determined by means, on the target, which utilize the higher audio-frequency components in the pressure wave produced by the flight of the projectile. This arrangement provides a greater accuracy of the distance measurement than systems which utilize the energy of the pressure wave since, over the ranges of most interest (" missdistance "), the higher audio-frequency components of the pressure wave are attenuated more rapidly with distance than is the energy of the pressure wave. In the described embodiment four pressure-sensitive transducers (to provide an overall spherical response) are utilized, their outputs, either individually or after combination, being amplified and filtered (to derive the higher audio frequencies) and then transmitted ...

UAV detection

A system 2 for detecting, classifying and tracking unmanned aerial vehicles (UAVs) 50 comprising: at least one microphone array 4 arranged to provide audio data; at least one camera 6/8 arranged to provide video data; and at least one processor 10 arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell (figure 3) as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures (figure 7); an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold. Multiple adjacent microphone arrays may be used to simulate a single larger microphone ...

Location of high pressure gas leaks by an ultrasound technique

For locating sources of ultrasonic signals and in particular the location of high pressure gas leaks, e.g. leaks from high pressure steam pipes, an ultrasonic sound signal-receiving device has two transducers 20, 22, one having a sharply directional receiving beam and the second being fixedly mounted with respect to the first and having a much broader directional receiving beam, the two receiving beams overlapping. The signals from the two transducers are fed to logarithmic amplifiers 25, 26 and thence to a differential amplifier 27, the output of which is dependent on the ratio of the signal amplitudes and hence on the angular direction of the sound source with respect to the axis of the sharply directional beam. The device is conveniently hand-held and moved to determine the amplitude of the output of the differential amplifier, e.g. on a visual indicator 28, so as thereby to determine the direction of the sound source. Overloading in the amplifiers or indicator device is thereby overcome ...

COLLABORATIVE LOCATION/ORIENTATION ESTIMATION

It is inter alia disclosed to estimate at least one of a location and an orientation of a first-type device (11 ) at least based on respective location estimates for one or more signal sources (10), wherein at least one location estimate for a signal source (10) of the one or more signal sources is determined at least based on respective signals from the signal source (10) received at one or more second-type devices (12) and respective locations of the one or more second-type devices (12), and respective position relationships between the one or more signal sources (10) and the first-type device (11 ).

Vorrichtung zum Bestimmen der Einfallsrichtung von zeitlich begrenzt auftretenden Schallwellen

Acoustic switching arrangement

An acoustic switching arrangement, suitable for use in a proximity fuze of a land mine capable of detonating in response to overflying helicopters, comprises (Fig. 2) a group 14 of directional microphones A, B, C, and D arranged with axes of maximum sensitivity mutually divergent e.g. in a horizontal plane. With four microphones in quadrature as shown a source detected initially by one thereafter designated as leading microphone say A. When the source moves closer and produces signals in all microphones, those of the leading microphone (A) and trailing (its opposite) microphone B are compared (32, 33) and when the difference between them is sufficiently small the source is considered to be at its closest point of approach. At that time the signals from the microphones C and D are compared (30, 31) and if the difference between their signals is sufficiently small the source is considered within a conical switching region subtended by a vertical from the group and coinciding with the blast ...

System for tracking a mobile target

Method and apparatus for detecting sound source

In a method and an apparatus for detecting a sound source, a measurement plane to be observed is automatically scanned in two-dimensional manner by means of two microphones which are spaced apart from each other by a given distance and are moved by a traversing device. Outputs of these microphones are sampled for successive measurement regions and then are processed by processing circuit including a fast Fourier transform to derive acoustic intensities with respect to various frequencies in a given frequency range. Then, a distribution of the acoustic intensities is indicated on a display device by using various indication techniques. Therefore, since the measurement is effected by using the acoustic intensity representing both a sound power and a propagating direction, the analysis of the sound source can be performed in an easy and accurate manner, and an entier apparatus can be small in size and inexpensive in cost.

FLOWMETER APPARATUS FLOWMETER APPARATUS

Acoustic treatment apparatus and method thereof

An acoustic treatment apparatus obtains a first output signal by performing filtering for forming a directivity in a first direction for received sound signals of sound receivers, obtains a second output signal by performing filtering for forming a directivity in a second direction different from the first direction for received sound signals of sound receivers, obtains a strength ratio between a strength of the first output signal and a strength of the second output signal, and estimates a sound source direction on the basis of the strength ratio.

SYSTEM FOR TRACKING A MOBILE TARGET

A method and system for tracking a mobile target within a monitored space using at least three fixed directional detectors having respective responsitivities which vary with angular position around the detector and being positioned around a reference axis with their respective detection axes angularly spaced apart and inclined towards said monitored space such that the detectors have angularly overlapping response characteristics and a combined non-uniform resonsivity profile. A signal is emitted at a source on the mobile target so that the at least three detectors provide respective electrical output signals (R,G,B). Chromatic processing is effected to transform the output signals (R, G, B) into at least first and second chomatic parameters (Hs, Ls) whose values are dependent upon the position of the target in said monitored space and the position of the target is determined based on the values of the chromatic parameters (Hs, Ls).

Improvements relating to methods and apparatus for guiding equipment

Directional infrasound sensing

A method and apparatus for determining a direction of infrasound. Infrasound is received by a directional infrasound sensor comprising a plurality of channels and a plurality of sensor devices. Each channel in the plurality of channels comprises a single opening at a first end of the channel and a closed end opposite the opening. The opening of each channel in the plurality of channels is pointed in a different direction from the opening of each other channel in the plurality of channels. The plurality of sensor devices includes a sensor device at the closed end of each channel in the plurality of channels. Each sensor device in the plurality of sensor devices is configured to generate a sensor signal in response to pressure. The sensor signals generated by the plurality of sensor devices are processed to determine the direction of the infrasound received by the directional infrasound sensor.

Audio sensing apparatus

A directional audio sensing device has two microphones (10, 12) which respond to audio signals and provide corresponding electrical signals. The electrical signals are compared and current is generated at a terminal 28 to drive a motor 30 in one or other direction according to the relative direction from which the audio signals are received. The motor is used to rotate an artificial flower. The apparatus is arranged so that the flower turns towards the source of any audio signals generated in its vicinity.

TRANSDUCER ARRAY SCANNING SYSTEM

Sound source localization based on binaural signals

Techniques are disclosed for sound source localization based on joint learning and evaluation of ITD and ILD representations that are measured in a complementary, correlation-based way using binaural time-frequency spectrums. According to one embodiment, from these measurements and learned representatives, which may, for example, be created by combinations of measurements from signals belonging to the same class, i.e., the same azimuthal location, probability distributions over frequency and class are computed. These probability distributions can be combined over cue and frequency using information-theoretic approaches to get a robust classification of the location and additionally a confidence measure for the quality of the classification result.

VERFAHREN ZUR RICHTSTRAHLBILDUNG IN PEILANLAGEN

FLOWMETER APPARATUS FLOWMETER APPARATUS

Sound source localization equipment and method

Speaker recognition/location using neural network

Computing devices and methods utilizing a joint speaker location/speaker identification neural network are provided. In one example a computing device receives a multi-channel audio signal of an utterance spoken by a user. Magnitude and phase information features are extracted from the signal and inputted into a joint speaker location/speaker identification neural network that is trained via utterances from a plurality of persons. A user embedding comprising speaker identification characteristics and location characteristics is received from the neural network and compared to a plurality of enrollment embeddings extracted from the plurality of utterances that are each associated with an identity of a corresponding person. Based at least on the comparisons, the user is matched to an identity of one of the persons, and the identity of the person is outputted.

VORRICHTUNG ZUR RICHTUNGSBESTIMMUNG EINFALLENDER WELLENENERGIE, INSBESONDERE VON UNTERWASSERSCHALLSIGNALEN

METHOD AND APPARATUS FOR INCREASING THE DIRECTION-FINDING ACCURACY OF A RECEIVER ARRANGEMENT

The invention relates to an apparatus and a method for increasing the direction-finding accuracy of a receiver arrangement. To this end, sound waves (15) are received using the receiver arrangement (12) and the sound waves (15) are used to ascertain received signals (16a to 16c). The received signals (16a to 16c) are used to ascertain direction signal (20a to 20c) for one relative reception direction (21a to 21c) at a time, and each direction signal (20a to 20c) is used to ascertain frequency lines (64a to 64j), associated with the same reception direction (21a to 21c), for one frequency at a time in a frequency range (62) with an amplitude value (68). In addition, a respective direction function (78) is formed for each frequency in the frequency range (62), with each adjacent first function argument (80) of a direction function (78) corresponding to one of the adjacent reception directions (21a to 21c), and each first function argument (80) having, as function value (84), the amplitude value (68) or a value that has been derived from the amplitude value (68) for the frequency line (64a to 64j) of the frequency of the respective direction function (78) of the reception direction (21a to 21c) which corresponds to the first function argument (80). Each of the direction functions (78) is transformed to the spectral domain, as a result of which a first spectral function (46) is obtained which has first spectral function arguments (102). The first spectral function (46) is filled with further spectral function arguments (108) between intermediate spectral function arguments (104) from the first spectral function arguments (102), wherein the further spectral function arguments (108) each have a function value (84) of zero or in the region of zero. The filled first spectral function (46) is then transformed back from the spectral domain, as a result of which an interpolated first direction function (60) is obtained.

Speaker recognition/location using neural network

Computing devices and methods utilizing a joint speaker location/speaker identification neural network are provided. In one example a computing device receives an audio signal of utterances spoken by multiple persons. Magnitude and phase information features are extracted from the signal and inputted into a joint speaker location and speaker identification neural network. The neural network utilizes both the magnitude and phase information features to determine a change in the person speaking. Output comprising the determination of the change is received from the neural network. The output is then used to perform a speaker recognition function, speaker location function, or both.

STROEMUNGSMESSER ZUR ERFASSUNG DER RELATIVGESCHWINDIGKEIT ZWISCHEN SONDEN UND EINEM DARAN VORBEISTROEMENDEN FLUD

NAVIGATIONAL AID FOR RECEIVING SOUND SIGNALS

A navigational aid for receiving sound signals such as those originating from people, buoys, boat or ship foghorns, etc., from any direction, and using them in aiding the navigation of a vehicle or craft especially when visibility is limited as by fog, rain, haze, smoke or during the nighttime. This device may also be used for search and rescue operations in locating lost people and animals. Still an additional use is in military operations to locate personnel/equipment during nighttime or obscured visibility conditions. Another use is the direction/vector location of aircraft in the air or on the ground during obscured visibility conditions. This device employs one or more sound receivers which convert the received sound signals into electrical signals. The electrical signals are supplied to a logic network to control indicating devices which indicate the direction from which the sound was received.

Sound source localization based on binaural signals

Verfahren zum Bestimmen einer oder mehrerer relativer Richtungen als Zielpeilung oder Zielpeilungen sowie Vorrichtung zur Ausführung des Verfahrens

Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren zum Bestimmen einer oder mehrerer relativer Richtungen 21a bis 21c als Zielpeilung oder Zielpeilungen. Hierbei werden die Schallwellen 15 mit einer Empfängeranordnung 12 empfangen und aus den Schallwellen 15 Empfangssignale 16a bis 16c gebildet. Aus den Empfangssignalen 16a bis 16c werden Richtungssignale 20a bis 20c ermittelt, die einer relativen Richtung 21a bis 21c zur Empfängeranordnung 12 zugeordnet werden. Aus jedem Richtungssignal 20a bis 20c wird ein Betragsspektrum 46 bzw. ein aus dem Betragsspektrum (46) abgeleitetes Spektrum ermittelt und aus dem Frequenzbereich (66) jedes Betragsspektrums (46) bzw. jedes aus dem Betragsspektrum (46) abgeleiteten Spektrums Frequenzbänder (76a bis 76h) ermittelt. Die Amplitudenwerte (71) der in einem der Frequenzbänder (76a bis 76h) auftretenden Frequenzen (68a bis 68j) werden dann als ein Frequenzbandamplitudenwert (78a bis 78h) des jeweiligen Frequenzbandes (76a bis 76h) zusammengefasst. Die relative Richtung (21a bis 21c), die einem Betragsspektrum (46) bzw. einem aus dem Betragsspektrum (46) abgeleiteten Spektrum zugeordnet ist, wird erfindungsgemäß als eine Zielpeilung bestimmt, wenn das dieser relativen Richtung (21a bis 21c) zugeordnete Betragsspektrum (46) bzw. das aus dem Betragsspektrum abgeleitete Spektrum mindestens eine Anzahl von Frequenzbandamplitudenwerten (78a bis 78h) oberhalb eines Schwellenwertes (31) aufweist, die oberhalb einer festgelegten Detektionsanzahl (38) liegt. The invention relates to a device and a method for determining one or more relative directions 21a to 21c as target bearings or target bearings. Here, the sound waves 15 are received with a receiver arrangement 12 and received signals 16a to 16c are formed from the sound waves 15. Direction signals 20a to 20c, which are assigned to a relative direction 21a to 21c to the receiver arrangement 12, are determined from the received signals 16a to 16c. A magnitude spectrum 46 or a ...

METHOD FOR DETERMINING ONE OR MORE RELATIVE DIRECTIONS AS TARGET DIRECTION OR TARGET DIRECTIONS AND DEVICE FOR CARRYING OUT THE METHOD

본 발명은 목표 방향 또는 목표 방향들로서 하나 또는 다수의 상대 방향(21a 내지 21c)을 결정하는 장치 및 방법에 관한 것이다. 음파(15)는 수신기 장치(12)에 의해 수신되고, 상기 음파(15)로부터 수신 신호들(16a 내지 16c)이 형성된다. 상기 수신 신호들(16a 내지 16c)로부터, 상기 수신기 장치(12)에 대한 하나의 상대 방향(21a 내지 21c)에 할당된 방향 신호들(20a 내지 20c)이 검출된다. 각각의 방향 신호(20a 내지 20c)로부터 절대값 스펙트럼(46) 또는 상기 절대값 스펙트럼(46)으로부터 도출된 스펙트럼이 검출되며 각각의 절대값 스펙트럼(46) 또는 상기 절대값 스펙트럼(46)으로부터 도출된 스펙트럼의 주파수 범위(66)로부터 주파수 대역들(76a 내지 76h)이 검출된다. 상기 주파수 대역들(76a 내지 76h) 중 하나의 주파수 대역에서 나타나는 주파수들(68a 내지 68j)의 진폭값들(71)이 각각의 주파수 대역(76a 내지 76h)의 주파수 대역 진폭값(78a 내지 78h)으로서 통합된다. 절대값 스펙트럼(46) 또는 상기 절대값 스펙트럼(46)으로부터 도출된 스펙트럼에 할당된 상대 방향(21a 내지 21c)은 본 발명에 따라 상기 상대 방향(21a 내지 21c)에 할당된 절대값 스펙트럼(46) 또는 상기 절대값 스펙트럼(46)으로부터 도출된 스펙트럼이 문턱값(31)을 초과하는 주파수 대역 진폭값들(78a 내지 78h)을 적어도 정해진 검출 수(33)를 초과하는 개수로 포함하면 목표 방향으로서 결정된다. The present invention relates to an apparatus and method for determining one or multiple relative directions 21a to 21c as a target direction or target directions. The sound wave 15 is received by the receiver device 12, from which the received signals 16a to 16c are formed. From the received signals 16a to 16c, direction signals 20a to 20c assigned to one relative direction 21a to 21c with respect to the receiver device 12 are detected. An absolute value spectrum 46 or a spectrum derived from the absolute value spectrum 46 is detected from each direction signal 20a to 20c and is derived from each absolute value spectrum 46 or the absolute value spectrum 46. Frequency bands 76a-76h are detected from the frequency range 66 of the spectrum. The amplitude values 71 of the frequencies 68a to 68j appearing in one of the frequency bands 76a to 76h are the frequency band amplitude values 78a to 78h of the respective frequency bands 76a to 76h. It is incorporated as. The relative directions 21a-21c assigned to the absolute value spectrum 46 or to a spectrum derived from the absolute value spectrum 46 are assigned to the absolute value spectrum 46 in the relative directions 21a to 21c according to the invention. Or if ...

Peilverfahren und Vorrichtung zu dessen Durchführung

HOSTILE FIRE DETECTION FOR AN AIRBORNE PLATFORM

Systems and methods are presented for detecting a direction of an incoming projectile and determining a source location of the projectile. One or more resonant sensors (comprising a plate, piezo electric sensor, etc.) can be arranged, where shockwaves from the projectile (e.g., shockwaves from a bullet travelling at supersonic speeds) are incident upon the plate and cause the plate to resonate. The resonance causes an electrical signal to be generated by the piezo electric sensor (e.g., a piezo electric film sensor), the greater the degree of resonance in the plate, the higher the magnitude of signal generated by the piezo electric sensor. By comparing the magnitude of the piezo electric signals across the array of resonant sensors it is possible to determine a trajectory of the projectile and hence a location of the source of the projectile. Acoustic waves can also be generated by muzzle waves.

A TRACKING, SAFETY AND NAVIGATION SYSTEM FOR FIREFIGHTERS

An ultrasonic signal (106) is used to link a beacon unit (101) to a tracker unit (100) to provide a tracking and navigation system for firefighters to use in a smoke filled environment at the scene of a fire. The beacon unit transmits an omnidirectional ultrasonic signal. The tracker unit, using a directional ultrasonic receiver provides a display or other indication of the signal strength of the received signal to allow the direction to the beacon unit to be determined. The ultrasonic signal provided by the beacon unit may be pulse modulated to inlcude digitally encoded data that may be used to identify particular individuals, objects, materials, dangers, or exits. In addition, the tracker unit may be provided with a transmitter and the beacon unit provided with a receiver such that audio communication may be established therebetween.

Direction-finding method with a small number of spatially offset directional characteristics

The frequency spectra of the group signals of the directional characteristics of a panoramic sonar system are formed and the direction determined per spectral line. In the lower frequency range, the focusing of the directional characteristics is only slight and the direction finding is inadequate, particularly to locate targets at long ranges. According to the invention, the spectral lines of all the directional characteristics at the same frequency form an angle function, as an independent variable, over the receiving direction of the directional characteristic. Their Fourier transform provides a fundamental. The phase of the fundamental is determined and indicates the direction to the target. The direction-finding method can be used advantageously in underwater sound technology at low frequencies, using a conventional cylinder base having four directional characteristics offset through 90@.

Verfahren zur Richtstrahlbildung in Peilanlagen

In order to increase the focusing of a direction finder device which has at least two identical transducers or groups of transducers (WL, WR), on the one hand a cumulative signal (b), and on the other hand a differential signal (c) are formed from the transducer output signals (a). The amount of the differential signal is then subtracted from that of the cumulative signal.

Arrangement for determining direction of incidence of sound waves occurring for limited periods, e.g. for sonar location, has neural network trained with simulated or measurement data

The arrangement has a sonar system receiver with receivers or sub-bases that can be selected with distinctive inherent directional characteristics. Simulated or measurement data acquired via the directional characteristic are used as training data for a neural network (100). The trained network is integrated into the sonar system, the input neurons (101-108) subjected to input levels of the same transducers and an output neuron (130) gives the direction of incidence.

Verfahren zum Bestimmen einer oder mehrerer relativer Richtungen als Zielpeilung oder Zielpeilungen sowie Vorrichtung zur Ausführung des Verfahrens

Verfahren zum Bestimmen einer oder mehrerer relativer Richtungen (21a bis 21c) als Zielpeilung bzw. Zielpeilungen, wobei Schallwellen (15) mit einer Empfängeranordnung (12) empfangen, aus den Schallwellen (15) mittels der Empfängeranordnung (12) Empfangssignale (16a bis 16c) ermittelt und aus den Empfangssignalen (16a bis 16c) Richtungssignale (20a bis 20c) jeweils einer zur Empfängeranordnung (12) relativen Richtung (21a bis 21c) ermittelt werden und aus jedem Richtungssignal (20a bis 20c) ein der relativen Richtung (21a bis 21c) des Richtungssignals (20a bis 20c) zugeordnetes Betragsspektrum (46) bzw. ein aus dem Betragsspektrum (46) abgeleitetes Spektrum ermittelt wird, dadurch gekennzeichnet, dass aus dem Frequenzbereich (66) jedes Betragsspektrums (46) bzw. jedes aus dem Betragsspektrum (46) abgeleiteten Spektrums Frequenzbänder (76a bis 76h) ermittelt werden, die Amplitudenwerte (71) der in einem der Frequenzbänder (76a bis 76h) auftretenden Frequenzen (68a bis 68j) als ein Frequenzbandamplitudenwert (78a bis 78h) des jeweiligen Frequenzbandes (76a bis 76h) zusammengefasst werden und die relative Richtung (21a bis 21c), die einem Betragsspektrum (46) bzw. einem aus dem Betragsspektrum (46) abgeleiteten Spektrum zugeordnet ist, als eine Zielpeilung bestimmt wird, wenn das dieser relativen Richtung (21a bis 21c) zugeordnete Betragsspektrum (46) bzw. das aus dem Betragsspektrum (46) abgeleitete Spektrum mindestens eine Anzahl von Frequenzbandamplitudenwerten (78a bis 78h) oberhalb eines Schwellenwertes (31) aufweist, die oberhalb einer festgelegten Detektionsanzahl (33) liegt. Method for determining one or more relative directions (21a to 21c) as target bearing, wherein sound waves (15) receive with a receiver arrangement (12), from the sound waves (15) by means of the receiver arrangement (12) receive signals (16a to 16c) Direction signals (20a to 20c) are respectively determined from the received signals (16a to 16c) relative to the receiver arrangement (12) ...

METHOD AND APPARATUS FOR INCREASING THE DIRECTION-FINDING ACCURACY OF A RECEIVER ARRANGEMENT

The invention relates to an apparatus and a method for increasing the direction-finding accuracy of a receiver arrangement. To this end, sound waves (15) are received using the receiver arrangement (12) and the sound waves (15) are used to ascertain received signals (16a to 16c). The received signals (16a to 16c) are used to ascertain direction signal (20a to 20c) for one relative reception direction (21a to 21c) at a time, and each direction signal (20a to 20c) is used to ascertain frequency lines (64a to 64j), associated with the same reception direction (21a to 21c), for one frequency at a time in a frequency range (62) with an amplitude value (68). In addition, a respective direction function (78) is formed for each frequency in the frequency range (62), with each adjacent first function argument (80) of a direction function (78) corresponding to one of the adjacent reception directions (21a to 21c), and each first function argument (80) having, as function value (84), the amplitude ...

METHOD AND DEVICE FOR SEARCHING SOUND SOURCE

PURPOSE: To search exactly a sound source position even in case when a distance between plural sound sources approaches exceeding the diameter of a microphone, by rotating a sound detecting part consisting of two microphones along the measuring plane centering around the pressure receiving face, at the measuring point which approaches an object to be measured. CONSTITUTION: In case when two microphones 1a, 1b of a sound detecting part are placed against two point sound sources A, B so that a pressure receiving face of microphone pressure receiving parts 2a, 2b becomes parallel to a line C connecting the two point sound sources A, B, when the sound detecting part is moved successively in the parallel direction of the line C and each measuring signal is plotted, the two point sound sources A, B cannot be separated as shown by a full line, but when a position where the microphone pressure receiving face is orthogonal to the line C is maintained and said part is moved successively in the parallel ...

DETECTION OF SOUND SOURCE

PURPOSE: To produce more correct detecting results with a simple operation by detecting a sound source monitoring the variation in acoustic intensity with the rotation of a microphone pair at a fixed position. CONSTITUTION: A microphone pair 3 combining microphones 1 and 2 is arranged at the position O facing an equipment 4 having a sound source 5 to be detected centering them. Then, the pair 3 is positioned parallel with the outer wall surface of the equipment 4 to monitor the acoustic intensity thereof. This reveals that the sound source is located on the left of the center O in the arrangement of the pair 3 when in the positive polarity and on the right when in the negative polarity. Subsequentially, the pair 3 is turned in place counterclockwise minitoring the acoustic intensity until the polarity inverts to negative from positive whereby the angle θ of rotation with the arranging line of the pair 3. Thus, it can be found that the sound source is located on the line extended from the ...

Method of spatial directional beam formation in direction-finding system

The method involves processing the signals of two groups of transducer pairs formed from identical groups, each containing at least one transducer and arranged on both sides of two mutually inclined axes, using an electronic signal processor. The method involves forming first and second groups of transducer pairs from identical groups, each containing at least one transducer and arranged on both sides of two mutually inclined axes. First and second amplitude summation signals are computed from the amplitudes of the complex output signals of the first and second groups using an electronic signal processor. First and second difference amplitude signals are computed from the complex output signals of the two groups. Resultant output signals for two main beam formation planes are computed and combined by multiplication to form a three-dimensional focused directional beam.

A METHOD AND AN APPARATUS FOR OBTAINING ACOUSTIC SOURCE LOCATION INFORMATION AND A MULTIMEDIA COMMUNICATION SYSTEM

A method and an apparatus for obtaining the acoustic source location information and a multimedia communication system are provided. In the method, the acoustic source location information corresponding to the original location of lens is obtained (201) and the lens controlling information is obtained (202), and the current acoustic source location information is obtained according to the acoustic location information corresponding to the original location of lens and the controlling information of lens (203).

Method and apparatus for obtaining acoustic source location information and a multimedia communication system

A method and an apparatus for obtaining the acoustic source location information and a multimedia communication system are provided. In the method, the acoustic source location information corresponding to the original location of lens and the lens controlling information are obtained, and the current acoustic source location information is obtained according to the acoustic location information corresponding to the original location of lens and the controlling information of lens.

Submarine signaling apparatus

Vehicle location device

A position locating device for identifying the distance and direction from a first object located with a user to a second object. The first object transmits a signal to the second object. The second object returns a signal to the first object. Microphones are arranged around the first object such that the time at which a microphone receives the returned signal is related to the direction of the second object relative to the first object. A receiver located at the first object decodes and analyzes the signal and its intensity to determine the distance of the second object.

Frequency activated direction indicator

A direction indicator giving a visual indication of the direction of origin of incident sounds having frequencies in a predetermined frequency range, is disclosed herein. The direction indicator embodies at least three sound detectors, each having an active filter passing electrical signals in a predetermined frequency range and a light emitting diode giving a visual indication of the intensity of the sound in the predetermined range received by the associated sound detector. Two of the sound detectors are disposed to preferentially receive sounds from opposite directions, and the third sound detector is disposed to receive sounds originating from a third direction normal to the directions of the first two. In the preferred embodiment, the direction indicator is an emergency vehicle direction indicator for use in an automobile giving the operator a visual indication of the direction of an emergency vehicle sounding its siren.

Verfahren zur Richtstrahlbildung in Peilanlagen und Vorrichtung zur Durchführung des Verfahrens

Verfahren und Vorrichtung zum Erhöhen der Peilgenauigkeit einer Empfängeranordnung

Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren zum Erhöhen der Peilgenauigkeit einer Empfängeranordnung. Dazu werden Schallwellen 15 mit der Empfängeranordnung 12 empfangen und aus den Schallwellen 15 Empfangssignale 16a bis 16c ermittelt. Aus den Empfangssignalen 16a bis 16c werden Richtungssignale 20a bis 20c jeweils einer relativen Empfangsrichtung 21a bis 21c und aus jedem Richtungssignal 20a bis 20c werden derselben Empfangsrichtung 21a bis 21c zugeordnete Frequenzlinien 64a bis 64j jeweils einer Frequenz eines Frequenzbereichs 62 mit einem Amplitudenwert 68 ermittelt. Ferner wird für jede Frequenz des Frequenzbereichs 62 jeweils eine Richtungsfunktion 78 gebildet wird, wobei jedes benachbarte erste Funktionsargument 80 einer Richtungsfunktion 78 jeweils einer der benachbarten Empfangsrichtungen 21a bis 21c entspricht und jedes erste Funktionsargument 80 als Funktionswert 84 den Amplitudenwert 68 oder einen aus dem Amplitudenwert 68 abgeleiteten Wert der Frequenzlinie ...

System and method of noise detection

A noise detection system is provided which includes a receiving unit, a processing unit and a user interface unit connected together. The receiving unit consists of a three-dimensional acoustical array for generally simultaneously receiving a multiplicity of sound signals from different directions. The sound signals have at least one sound source of interest. The processing unit processes the sound signals and consists of a three-dimensional spatial filter for identifying the elevation and azimuth of each of the sound signals, a sound database containing a multiplicity of soundprints of sound sources of interest, apparatus for classifying the sound signals with the soundprints, and apparatus for providing the azimuth and elevation of each of the classified sound signals. The user interface unit indicates to the user the azimuths and elevations of the classified sound signals. The processing unit further consists of filtering apparatus for filtering extraneous noise signals received by the ...

Method for determining one or more relative directions as target bearing or target bearings and device for performing the method

Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren zum Bestimmen einer oder mehrerer relativer Richtungen 21 a bis 21 c als Zielpeilung oder Zielpeilungen. Hierbei werden die Schallwellen 15 mit einer Empfängeranordnung 12 empfangen und aus den Schallwellen 15 Empfangssignale 16a bis 16c gebildet. Aus den Empfangssignalen 16a bis 16c werden Richtungssignale 20a bis 20c ermittelt, die einer relativen Richtung 21a bis 21 c zur Empfängeranordnung 12 zugeordnet werden. Aus jedem Richtungssignal 20a bis 20c wird ein Betragsspektrum 46 bzw. ein aus dem Betragsspektrum (46) abgeleitetes Spektrum ermittelt und aus dem Frequenzbereich (66) jedes Betragsspektrums (46) bzw. jedes aus dem Betragsspektrum (46) abgeleiteten Spektrums Frequenzbänder (76a bis 76h) ermittelt. Die Amplitudenwerte (71) der in einem der Frequenzbänder (76a bis 76h) auftretenden Frequenzen (68a bis 68j) werden dann als ein Frequenzbandamplitudenwert (78a bis 78h) des jeweiligen Frequenzbandes (76a bis 76h) zusammengefasst ...

METHOD FOR THE FORMATION OF RADIATED BEAMS IN DIRECTION FINDER SYSTEMS

In order to increase the focusing of a direction finder device which has at least two identical transducers or groups of transducers (WL, WR), on the one hand a cumulative signal (b), and on the other hand a differential signal (c) are formed from the transducer output signals (a). The amount of the differential signal is then subtracted from that of the cumulative signal.

Method of determining the direction of incidence of received sound pulses

The method involves using a directional sensor (11) to form directional characteristics using transit time compensation of received signals and an intercept signal analysis circuit for detecting directional characteristic signals with pulsed signal content. The envelope of each directional characteristic signal with a pulsed signal content is formed and its gradients determined and compared to determine the envelope with the largest gradient, which is associated with the direction of reception sound pulse.

ACOUSTICAL DIRECTION DETECTOR

Collaborative location/orientation estimation

It is inter alia disclosed to estimate at least one of a location and an orientation of a first-type device (11) at least based on respective location estimates for one or more signal sources (10), wherein at least one location estimate for a signal source (10) of the one or more signal sources is determined at least based on respective signals from the signal source (10) received at one or more second-type devices (12) and respective locations of the one or more second-type devices (12), and respective position relationships between the one or more signal sources (10) and the first-type device (11).

METHOD FOR THE FORMATION OF RADIATED BEAMS IN DIRECTION FINDER SYSTEMS

Zum Erhöhen der Bündelung einer mindestens zwei gleiche Wandler oder Wandlergruppen (WL, WR) aufweisenden Peileinrichtung werden aus den Wandlerausgangssignalen (a) einerseits ein Betrags-Summensignal (b) und andererseits ein Differenzsignal (c) gebildet und anschließend der Betrag des Differenzsignals von dem des Betrags-Summensignals subtrahiert.

Method for the spatial transformation of radiated beams in direction finder systems

Method of spatial directional beam formation in direction-finding system The method involves processing the signals of two groups of transducer pairs formed from identical groups, each containing at least one transducer and arranged on both sides of two mutually inclined axes, using an electronic signal processor. The method involves forming first and second groups of transducer pairs from identical groups, each containing at least one transducer and arranged on both sides of two mutually inclined axes. First and second amplitude summation signals are computed from the amplitudes of the complex output signals of the first and second groups using an electronic signal processor. First and second difference amplitude signals are computed from the complex output signals of the two groups. Resultant output signals for two main beam formation planes are computed and combined by multiplication to form a three-dimensional focused directional beam.

Method of finding the direction of a target radiating or reflecting sound waves

ACOUSTIC PROCESSING DEVICE AND METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide an acoustic processing device capable of estimating a direction, even if sensitivity of a sound receiving device is dispersed or changed with the passage of time. SOLUTION: This device has the first beam former 102-1 for determining the first output signal by subjecting a received sound signal of each receiving device 101 to filter processing for forming directivity in the first direction, the second beam former 102-2 for determining the second output signal by subjecting the received sound signal of each receiving device 101 to filter processing for forming directivity in the second direction which is different from the first direction, a power ratio calculation part 103 for determining the intensity ratio between intensity of the first output signal and intensity of the second output signal, and a direction estimation part 105 for estimating a sound source direction based on the intensity ratio. COPYRIGHT: (C)2010,JPO&INPIT ...

Elektroakustische Anzeigevorrichtung in Luftzielscheiben

Apparatus and method for audio analysis

An apparatus comprises a receiver ( 201 ) receiving a multi-channel audio signal representing audio for a scene. An extractor ( 203 ) extracts at least one directional audio component by applying a spatial filtering to the multi-channel signal where the spatial filtering is dependent on the multi-channel audio signal. A feature processor ( 205 ) determines a set of features for the first directional audio component and a categorizer ( 207 ) determines a first audio source category out of a plurality of audio source categories for the directional audio signal in response to the set of features. An assigner ( 209 ) assigns a first audio source property to the first directional audio component from a set of audio source properties for the first audio source category. The apparatus may provide very advantageous categorization and characterization of individual audio sources/components present in a multi-channel signal. This may be advantageous e.g. for visualization of audio events.

Sound source detecting method and detecting device

Provided are a detection method for a sound source and a detection device therefor, which are capable of accurately detecting the position of a sound source through use of measurement results of sound intensities. In the detection method, I all =√(I x 2 +I y 2 +I z 2 ), which is a total value of the sound intensities I x , I y , and I z in three axial directions (x-, y-, and z-axis directions) orthogonal to each other at a sound receiving point (P) in a sound field, is calculated, and then the position of the sound source is estimated after extracting the sound source by performing processing with averaged values within a predetermined peak width instead of the magnitude of a peak in a sound intensity waveform of the total value, or the position of the sound source is estimated after extracting the sound source with attention being given to a spatial travel speed of a sound intensity or a sound particle velocity of the total value.

SPEAKER RECOGNITION/LOCATION USING NEURAL NETWORK

Computing devices and methods utilizing a joint speaker location/speaker identification neural network are provided. In one example a computing device receives an audio signal of utterances spoken by multiple persons. Magnitude and phase information features are extracted from the signal and inputted into a joint speaker location and speaker identification neural network. The neural network utilizes both the magnitude and phase information features to determine a change in the person speaking. Output comprising the determination of the change is received from the neural network. The output is then used to perform a speaker recognition function, speaker location function, or both. 1. A computing device , comprising:a processor; and receive an audio signal containing utterances spoken by multiple persons;', 'extract magnitude features and phase information features from the signal;', 'input the magnitude features and the phase information features into a joint speaker location and speaker identification neural network, wherein the neural network utilizes both the magnitude features and the phase information features to determine a change in the person speaking;', 'receive, from the joint speaker location and speaker identification neural network, output comprising the determination of the change in the person speaking; and', 'utilize the output to perform a speaker recognition function, a speaker location function, or both the speaker recognition function and the speaker location function., 'a memory holding instructions executable by the processor to2. The computing device of claim 1 , wherein the joint speaker location and speaker identification neural network is configured to determine the change in the person speaking without utilizing information from enrollment utterances of the multiple persons.3. The computing device of claim 1 , wherein the joint speaker location and speaker identification neural network is configured to determine the change in the person ...

METHOD AND SYSTEM OF ACOUSTIC ANGLE OF ARRIVAL DETECTION

A system, article, and method of acoustic angle of arrival detection uses both same-time and delayed-time audio signal value comparisons in a time domain that are input to a classifier neural network. 1. A computer-implemented method of acoustic angle of arrival detection comprising:receiving, by at least one processor, multiple audio signals from at least two microphone channels, wherein each channel provides an audio signal from a different microphone;sampling the audio signals at a plurality of times to form audio samples of each channel;generating same-time comparison values comprising comparing the audio samples of different channels and generated along the audio signals at substantially a same time frame;generating delay comparison values comprising comparing the audio values that are both of different channels and of at least partially different time frames generated along the audio signal; anddetermining an acoustic angle of arrival of acoustics forming the audio signals and comprising using both the same-time comparison values and the delay comparison values.2. The method of wherein the comparing related to both the same-time and delay comparisons comprises determining the root mean square of the difference between audio samples that are being compared.3. The method of comprising inputting a version of the same-time and delay comparison values into a classifier neural network to form the acoustic angle of arrival.4. The method of wherein each output of the neural network is associated with an angle of arrival relative to a reference direction.5. The method of wherein the same-time and delay comparison values together form a concatenated vector that is input to the neural network.6. The method of wherein the neural network only has three layers: an input layer claim 3 , one hidden layer claim 3 , and an output layer.7. The method of comprising normalizing the audio values before performing the comparisons.8. The method of comprising obtaining the angle of ...

VOICE RECOGNITION IMAGE FEEDBACK PROVIDING SYSTEM AND METHOD

Voice recognition image feedback providing system and method capable of providing conveniently various services to a user is disclosed. A voice recognition image feedback device in the system comprises a voice recognition unit configured to recognize user's voice, an image feedback unit configured to output an image corresponding to the voice in a direction where the voice is inputted and a control unit configured to control the voice recognition unit and the image feedback unit. Here, wherein the image is outputted to a user peripheral location area so that the image is shown to the user, the user peripheral location area means an area having a radius of 3 meter based on a point at which the user locates, and at least part of the image is shown in the area having the radius of 3 meter. 1. A voice recognition image feedback device comprising:a voice recognition unit configured to recognize user's voice;a structure recognition unit configured to recognize a peripheral structure of the user;an image feedback unit configured to output an image corresponding to the recognized voice; anda control unit configured to control operation of the voice recognition unit, the structure recognition unit and the image feedback unit,wherein the image feedback unit changes at least part of a focus of the image feedback unit, a location at which the image is to be outputted or the image depending on the recognized structure, and outputs the image by reflecting the changes.2. The voice recognition image feedback device of claim 1 , wherein the image is outputted to a user peripheral location area so that the image is shown to the user claim 1 ,the user peripheral location area means an area having a radius of specific distance based on a point at which the user locates, and at least part of the image is shown in the area having the radius of specific distance.3. The voice recognition image feedback device of claim 1 , wherein the image includes a virtual entity having an avatar of the ...

THREE-DIMENSIONAL MEASUREMENT DEVICE WITH ANNOTATION FEATURES

A three-dimensional (3D) measurement system and method is provided. The system includes a noncontact measurement device, an annotation member and a processor. The noncontact measurement device being operable to measure a distance from the noncontact measurement device to a surface. The annotation member is coupled to the noncontact measurement device. The processor is operably coupled to the noncontact measurement device and the annotation member, the processor operable to execute computer instructions when executed on the processor for determining 3D coordinates of at least one point in a field of view based at least in part on the distance, recording an annotation in response to an input from a user, and associating the annotation with the at least one point. 1. A three-dimensional (3D) measurement system comprising:a noncontact measurement device operable to measure a distance from the noncontact measurement device to a surface;an annotation member coupled to the noncontact measurement device; anda processor operably coupled to the noncontact measurement device and the annotation member, the processor operable to execute computer instructions when executed on the processor for determining 3D coordinates of at least one point in a field of view based at least in part on the distance, recording an annotation in response to an input from a user, and associating the annotation with the at least one point.2. The system of claim 1 , wherein the annotation member is a microphone arranged to receive sounds from the user.3. The system of claim 2 , wherein the microphone includes a plurality of microphones claim 2 , each of the plurality of microphones being coupled to the noncontact measurement device and arranged to receive sound from a different direction.4. The system of claim 3 , wherein the processor is further operable to determine a direction that the sound is generated based on signals from the plurality of microphones.5. The system of claim 2 , wherein the ...

SPEAKER RECOGNITION/LOCATION USING NEURAL NETWORK

Computing devices and methods utilizing a joint speaker location/speaker identification neural network are provided. In one example a computing device receives a multi-channel audio signal of an utterance spoken by a user. Magnitude and phase information features are extracted from the signal and inputted into a joint speaker location/speaker identification neural network that is trained via utterances from a plurality of persons. A user embedding comprising speaker identification characteristics and location characteristics is received from the neural network and compared to a plurality of enrollment embeddings extracted from the plurality of utterances that are each associated with an identity of a corresponding person. Based at least on the comparisons, the user is matched to an identity of one of the persons, and the identity of the person is outputted. 1. A computing device , comprising:a processor; and receive a multi-channel audio signal of an utterance spoken by a user;', 'extract magnitude features and phase information features from the signal;', 'input the magnitude features and the phase information features into a joint speaker location/speaker identification neural network, wherein the joint speaker location/speaker identification neural network is trained using a plurality of utterances from a plurality of persons;', 'receive from the joint speaker location/speaker identification neural network a user embedding comprising speaker identification characteristics and location characteristics;', 'compare the user embedding to a plurality of enrollment embeddings extracted from the plurality of utterances that are each associated with an identity of a corresponding person;', 'based at least on the comparisons, match the user to an identity of one of the persons; and', 'output the identity of the person., 'a memory holding instructions executable by the processor to2. The computing device of claim 1 , wherein the joint speaker location/speaker ...

使用粒子滤波估计声源地点

通过粒子滤波估计声源地点，其中粒子的集合表示对于包括声源地点的状态变量的概率密度函数。该方法包括响应于从声源到至少两个声音记录位置的估计的声学传递函数之间的相关性，确定粒子的权重。具体地可以确定性地从该相关性确定权重更新函数，因此该相关性可以被用作对于粒子滤波的测量函数的伪似然函数。可以从朝向声源的音频波束形成确定声学传递函数。音频权重可以与视频权重相组合以产生多模式粒子滤波方法。

Estimating sound source location using particle filtering

FIELD: physics, acoustics. SUBSTANCE: invention relates to estimation of the location of a sound source using particle filtering, particularly estimation of the location of a sound source for a multimodal audio-visual communication application. A sound source location is estimated by particle filtering where the particles represent a probability density function for a state variable comprising the sound source location. The method includes determining the weight coefficient for a particle in response to correlation between estimated acoustic transfer functions from the sound source to at least two sound recording positions. A weight coefficient update function may specifically be determined deterministically from the correlation and thus the correlation may be used as a pseudo-likelihood function for the measurement function of the particle filtering. The acoustic transfer functions may be determined from an audio beamforming towards the sound source. The audio weight coefficient may be combined with a video weight coefficient to generate a multimodal particle filtering approach. EFFECT: high adaptability, easier estimation of the location of the sound source while increasing accuracy and improving efficiency. 15 cl, 9 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G01S 3/803 (13) 2 511 672 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011129602/28, 11.12.2009 (24) Дата начала отсчета срока действия патента: 11.12.2009 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.01.2013 Бюл. № 3 (73) Патентообладатель(и): КОНИНКЛЕЙКЕ ФИЛИПС ЭЛЕКТРОНИКС Н.В. (NL) R U 16.12.2008 EP 08171826.4 (72) Автор(ы): ЛИ Вей П. (NL), САРРАУК Баха Э. (NL), ВАН СТЕЙВЕНБЕРГ Леон К. А. (NL), ЯНСЕ Корнелис П. (NL) (45) Опубликовано: 10.04.2014 Бюл. № 10 US2004220769 A1, 04.11.2004. US 2008/0181430 A1, 31.07.2008. EP 1992959 A2, 19.11.2008. US2003/0103647 A1, 05.06.2003 (85) Дата начала ...

Method and device for searching sound source

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

A method and an apparatus for obtaining acoustic source location information and a multimedia communication system

Sound source localization equipment and method

描述了声源定位设备和方法。基于通过话筒阵列获得的短时间帧数据计算帧幅度差向量。帧幅度差向量反映在记录短时间帧数据期间阵列话筒捕获的幅度之间的差。评价帧幅度差向量和多个参考帧幅度差向量中的每个之间的相似度。每个参考帧幅度差向量反映在记录来自多个候选位置之一的声音期间阵列话筒捕获的幅度之间的差。至少基于候选位置和相关的相似度估计声源的期望位置。能够至少基于幅度差来进行声源定位。

Sound source localization apparatus and method

Sound processing apparatus and method

Sound source detecting method and detecting device

Provided are a detection method for a sound source and a detection device therefor, which are capable of accurately detecting the position of a sound source through use of measurement results of sound intensities. In the detection method, I_all=√(I_x+I_y²+I_z²), which is a total value of the sound intensities I_x, I_y, and I_zin three axial directions (x-, y-, and z-axis directions) orthogonal to each other at a sound receiving point (P) in a sound field, is calculated, and then the position of the sound source is estimated after extracting the sound source by performing processing with averaged values within a predetermined peak width instead of the magnitude of a peak in a sound intensity waveform of the total value, or the position of the sound source is estimated after extracting the sound source with attention being given to a spatial travel speed of a sound intensity or a sound particle velocity of the total value.

System and method of noise detection

Underwater direction of arrival estimation method and device based on uniform linear array with adjustable angle

一种基于可调夹角均匀线阵的水下波达方向估计方法及装置，采用两个夹角可以调节的均匀线阵(L1,L2)，通过两个阵列夹角与波达方向角之间的关系消去了声速这个变量，使得最后的运算结果与声速无关，从而提高了估计精度，同时由于两线阵夹角可变，通过取不同值进行多次测量，可以更好的消除误差。

Leak locating microphone, method and system for locating fluid leaks in pipes

A leak detecting microphone inserted directly into fluid within a pipe includes a housing having a first end being inserted within the pipe and a second opposed end extending outside the pipe. A diaphragm is mounted within the first housing end and an acoustic transducer is coupled to the diaphragm for converting acoustical signals to electrical signals. A plurality of apertures are provided in the housing first end, the apertures located both above and below the diaphragm, whereby to equalize fluid pressure on either side of the diaphragm. A leak locating system and method are provided for locating fluid leaks within a pipe. A first microphone is installed within fluid in the pipe at a first selected location and sound is detected at the first location. A second microphone is installed within fluid in the pipe at a second selected location and sound is detected at the second location. A cross-correlation is identified between the detected sound at the first and second locations for identifying a leak location.

Estimating a sound source location using particle filtering

通过粒子滤波估计声源地点，其中粒子的集合表示对于包括声源地点的状态变量的概率密度函数。该方法包括响应于从声源到至少两个声音记录位置的估计的声学传递函数之间的相关性，确定粒子的权重。具体地可以确定性地从该相关性确定权重更新函数，因此该相关性可以被用作对于粒子滤波的测量函数的伪似然函数。可以从朝向声源的音频波束形成确定声学传递函数。音频权重可以与视频权重相组合以产生多模式粒子滤波方法。

Flowmeter apparatus

Three posts mounted on the underside of a ship transmit acoustic signals to and from one another for computation of ship''s speed. The posts are streamlined for traveling through the water and each includes at the lower end thereof a streamlined housing having a cavity in which is positioned a transducer assembly. The cavity is covered by a thin acoustic window along the streamlined surface. Water is introduced between the transducer assembly and the window for proper signal coupling such that a propagated acoustic signal is properly transmitted to the transducer assembly in another post. Due to the streamlining, the acoustic signals impinge at different angles upon at least two of the posts and the acoustic windows for these two different posts are of different materials and carefully chosen to insure proper signal reception.

Estimation of sound source position using particle filtering

Methods and devices for processing audio input using unidirectional audio input devices

A method for processing audio input includes receiving audio inputs from a plurality of unidirectional audio input devices, including at least two unidirectional audio input devices oriented to face forward and at least one unidirectional audio input device oriented to face rearward; analyzing the received audio inputs from the plurality of unidirectional audio input devices to obtain audio information corresponding to the received audio inputs; comparing the audio information corresponding to the audio input from at least one of the at least two forward facing unidirectional audio input devices and the audio information corresponding to the audio input from the rearward facing unidirectional audio input device; obtaining, from the comparison, a subset of sections of the audio information corresponding to the received audio inputs from the sound source; determining a position of the sound source based on the audio information corresponding to the audio inputs from the plurality of unidirectional audio input devices and the subset of sections of the audio information; and filtering the audio information corresponding to the audio inputs from the plurality of unidirectional audio input devices based on the subset of sections of the audio information and the position of the sound source..

Estimating a sound source location using particle filtering

The sound source location is estimated to be understood by particle filtering, where the set of particles represents a probability density function for the state variable including the sound source location. The method includes determining a weight for a particle in response to a correlation between estimated sound transfer functions from the sound source to at least two sound recording points. The weight update function can be deterministically determined from the correlation in particular, so that the correlation can be used as a pseudo-likelihood function for the measurement function of the particle filtering. Acoustic transfer functions can be determined from the audio beamforming to the source. The audio weights may be combined with the video weights to generate a multi-modal particle filtering scheme.

Torpedo homing beam sharpening method

本发明涉及一种可有效提高鱼雷对空间不同方位多个目标分辨能力的鱼雷自导波束锐化方法。其特点是针对鱼雷自导声基阵，通过对基阵各阵元接收信号选取不同加权系数进行加权求和，在空间相同方向同时形成主瓣窄而旁瓣高和主瓣宽而旁瓣低的两个波束，分别实现减小波束主瓣和抑制波束旁瓣。利用这两个具有不同主、旁瓣特性的波束信号及包络进行对应乘积加权的复合处理，在进一步锐化波束主瓣的同时降低旁瓣，以获取低旁瓣的锐化波束信号，提高波束方位分辨能力。该方法计算量小，稳健性好，适应能力强，特别是可适用于空间信号源数目未知或者各信源之间具有较强相关性的应用环境，具有较好的工程实用性，可有效提高鱼雷多目标空间方位分辨能力。

基于可调夹角均匀线阵的水下波达方向估计方法及装置

本发明公开了一种基于可调夹角均匀线阵的水下波达方向估计方法及装置，本发明采用两个夹角可以调节的均匀线阵，通过两个阵列夹角与波达方向角之间的关系消去了声速这个变量，使得最后的运算结果与声速无关，从而提高了估计精度，同时由于两线阵夹角可变，通过取不同值进行多次测量，可以更好的消除误差。

Video recording method and electronic devices

A video recording method is provided. In the method, when recording a video including a user, a first electronic device may capture a plurality of frames of images, and encode the plurality of frames of images to obtain a video stream. The first electronic device may further obtain, by using a bone conduction audio signal and a user audio signal that are sent by a second electronic device, a stereo audio signal that matches a sound image direction of the user, encode stereo audio signals corresponding to the plurality of frames of images to obtain an audio stream, and mix the audio stream with the video stream to obtain a video. In the video, a sound image direction of a sound of the user matches a visual image direction of the user. According to technical solutions provided in this application, in a recorded video, it can be ensured that the sound of the user is clear when the sound image direction of the sound of the user matches the visual image direction of the user.

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Apparatus, system, and method for machine perception

A system may include a wearable apparatus dimensioned to be worn by a user about an axial region of the user’s body such that, when the wearable apparatus is worn by the user, the user’s field of view into a local environment is substantially free of a view of the wearable apparatus. The system may also include a machine-perception subsystem that is coupled to the wearable apparatus and that gathers information about the local environment by observing the local environment. Additionally, the system may include an experience-analysis subsystem that infers, based on the information about the local environment and information about the user, contextual information about an experience of the user in the local environment. Furthermore, the system may include a non-visual communication subsystem that outputs the contextual information about the experience of the user. Various other apparatuses, systems, and methods are also disclosed.

注釈機能を備える３次元測定用装置

【解決手段】３次元（３Ｄ）測定のためのシステム及び方法が与えられる。本システムは、非接触測定装置と、注釈装置と、プロセッサと、を含む。非接触測定装置は、非接触測定装置から表面までの距離を測定するように動作可能である。注釈装置は、非接触測定装置に接続される。プロセッサは、非接触測定装置及び注釈装置に動作可能に接続され、プロセッサにより実行されたときに、以下の命令、すなわち、少なくとも部分的には距離に基づいて、視野内の少なくとも１つの点の３Ｄ座標を決定し、ユーザからの入力に応答して注釈を記録し、注釈を少なくとも１つの点と関連付けるための命令を実行するように動作可能である。【選択図】図１

Sound source detecting method and detecting device

Authority vehicle movement direction detection

Described herein are systems, methods, and non-transitory computer readable media for determining a direction of movement of an authority vehicle in relation to another vehicle such as an autonomous vehicle and initiating or ceasing a vehicle response measure that may have previously been initiated based on the determined direction of movement. A signal source associated with the authority vehicle emits a periodic acoustic signal that is received at one or more audio capture devices, which may be provided at various locations on an exterior of a vehicle. One or more signal characteristics of the acoustic signal can be determined such as frequency, sound intensity, and/or phase. Detected signal characteristic(s) of the acoustic signal can be analyzed, and in some cases, compared against known information such as an expected frequency of the acoustic signal to determine the direction of movement of the authority vehicle in relation to the vehicle.

Apparatus and method for audio analysis

An apparatus comprises a receiver ( 201 ) receiving a multi-channel audio signal representing audio for a scene. An extractor ( 203 ) extracts at least one directional audio component by applying a spatial filtering to the multi-channel signal where the spatial filtering is dependent on the multi-channel audio signal. A feature processor ( 205 ) determines a set of features for the first directional audio component and a categorizer ( 207 ) determines a first audio source category out of a plurality of audio source categories for the directional audio signal in response to the set of features. An assigner ( 209 ) assigns a first audio source property to the first directional audio component from a set of audio source properties for the first audio source category. The apparatus may provide very advantageous categorization and characterization of individual audio sources/components present in a multi-channel signal. This may be advantageous e.g. for visualization of audio events.

Detección de vehículos aéreos no tripulados (uav)

UN SISTEMA (2) PARA DETECTAR, CLASIFICAR Y RASTREAR VEHÍCULOS AÉREOS NO TRIPULADOS (UAV) (50) QUE COMPRENDE: AL MENOS UN ARREGLO DE MICRÓFONOS (4) DISPUESTO PARA PROPORCIONAR DATOS DE AUDIO; AL MENOS UNA CÁMARA (6, 8) DISPUESTA PARA PROPORCIONAR DATOS DE VIDEO; Y AL MENOS UN PROCESADOR DISPUESTO PARA GENERAR UN MAPA DE PROBABILIDAD DE DETECCIÓN ESPACIAL QUE COMPRENDE UN CONJUNTO DE CELDAS ESPACIALES. EL PROCESADOR ASIGNA UN PUNTAJE DE PROBABILIDAD A CADA CELDA EN FUNCIÓN DE: UN PUNTAJE DE ANÁLISIS DE AUDIO GENERADO AL COMPARAR LOS DATOS DE AUDIO CON UNA BIBLIOTECA DE FIRMAS DE AUDIO; UNA PUNTUACIÓN DE INTENSIDAD DE AUDIO GENERADA AL EVALUAR UNA POTENCIA DE AL MENOS UNA PORCIÓN DE UN ESPECTRO DE LOS DATOS DE AUDIO; Y UNA PUNTUACIÓN DE ANÁLISIS DE VIDEO GENERADA MEDIANTE EL USO DE UN ALGORITMO DE PROCESAMIENTO DE IMÁGENES PARA ANALIZAR LOS DATOS DE VIDEO. EL SISTEMA ESTÁ DISPUESTO PARA INDICAR QUE SE HA DETECTADO UN UAV EN UNA O MÁS CELDAS ESPACIALES SI LA PUNTUACIÓN DE PROBABILIDAD ASOCIADA EXCEDE UN UMBRAL DE DETECCIÓN PREDETERMINADO.

Sound source detecting method and detecting device

Uav detection

A system for detecting, classifying and tracking unmanned aerial vehicles (UAVs) comprising: at least one microphone array arranged to provide audio data; at least one camera arranged to provide video data; and at least one processor arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures; an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold.

Uav detection

A system (2) for detecting, classifying and tracking unmanned aerial vehicles (UAVs) (50) comprising: at least one microphone array (4) arranged to provide audio data; at least one camera (6, 8) arranged to provide video data; and at least one processor arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures; an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold.

Acoustic switching arrangement

Data aided method for robust direction of arrival (doa) estimation in the presence of spatially-coherent noise interferers

A method and apparatus to determine a direction of arrival (DOA) of a talker in the presence of a source of spatially-coherent noise. A time sequence of audio samples that include the spatially-coherent noise is received and buffered. Aided by previously known data, a trigger point is detected in the time sequence of audio samples when the talker begins to talk. The buffered time sequence of audio samples is separated into a noise segment and a signal-plus-noise segment based on the trigger point. For each direction of a plurality of distinct directions: an energy difference is computed for the direction between the noise segment and the signal-plus-noise segment, and the DOA of the talker is selected as the direction of the plurality of distinct directions having a largest of the computed energy differences.

声音方向检测传感器以及包括其的电子装置

提供了能够检测声音输入方向的声音方向检测传感器以及包括所述声音方向检测传感器的电子装置。声音方向检测传感器包括接收输入声音的声音入口、输出通过声音入口输入的声音的声音出口以及以如下方式布置在声音入口和声音出口之间的多个定向振动器：至少一个定向振动器基于通过声音入口输入的声音的方向选择性地作出响应，其中，与所述多个定向振动器中具有最低输出幅值的定向振动器的方向垂直的方向被确定为声音的输入方向。

Deteccion de vehiculos aereos no tripulados.

Un sistema 2 para detectar, clasificar y rastrear vehículos aéreos no tripulados (UAV) 50 que comprende: al menos una matriz de micrófonos 4 dispuesta para proporcionar datos de audio; al menos una cámara 6, 8 dispuesta para proporcionar datos de video; y al menos un procesador 10 dispuesto para generar un mapa de probabilidad de detección espacial que comprende un conjunto de celdas espaciales. El procesador signa un puntaje de probabilidad a cada celda en función de: una puntuación de análisis de audio generada al comparar datos de audio con una biblioteca de firmas de audio; una puntuación de intensidad de audio generada al evaluar una potencia de al menos una porción de un espectro de los datos de audio; y un puntaje de análisis de video generado mediante el uso de un algoritmo de procesamiento de imágenes para analizar los datos de video. El sistema se dispone para indicar que se detecta un UAV en una o más celdas espaciales si el puntaje de probabilidad asociado excede un umbral de detección predeterminado.

Uav detection

A system (2) for detecting, classifying and tracking unmanned aerial vehicles (UAVs) (50) comprising: at least one microphone array (4) arranged to provide audio data; at least one camera (6, 8) arranged to provide video data; and at least one processor arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures; an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold.

Detección de drones

Un sistema (2) para la detección, la clasificación y el rastreo de vehículos aéreos no tripulados (50) en una zona de interés, comprendiendo el sistema: al menos una matriz de micrófonos (4, 16) que incluye varios micrófonos, estando la, al menos, una matriz de micrófonos dispuesta para proporcionar datos de audio; al menos una cámara (8, 18) dispuesta para proporcionar datos de vídeo; Y al menos un procesador (10) dispuesto para procesar los datos de audio y los datos de vídeo para generar un mapa de probabilidad de detección espacial que comprende un conjunto de celdas espaciales (12), en donde el procesador (10) asigna una puntuación de probabilidad a cada celda existente dentro del conjunto de celdas espaciales (12), siendo dicha puntuación de probabilidad una función de: una puntuación de análisis de audios generada por un algoritmo de análisis de audios, comprendiendo dicho algoritmo de análisis de audios la comparación de los datos de audio correspondientes a la celda espacial con una biblioteca de firmas de audio (80); una puntuación de intensidad de audio generada mediante la evaluación de una amplitud de, al menos, una porción de un espectro (70) de los datos de audio correspondientes a la celda espacial; Y una puntuación de análisis de vídeo generada utilizando un algoritmo de procesamiento de imágenes para analizar los datos de vídeo correspondientes a la celda espacial, En donde el sistema está dispuesto para indicar que un vehículo aéreo no tripulado (50) ha sido detectado en una o más celdas espaciales (14) dentro de la zona de interés si la puntuación de probabilidad asignada a dicha o dichas celdas espaciales (14) excede un umbral de detección predeterminado.

Uav detection

A system (2) for detecting, classifying and tracking unmanned aerial vehicles (UAVs) (50) comprising: at least one microphone array (4) arranged to provide audio data; at least one camera (6, 8) arranged to provide video data; and at least one processor arranged to generate a spatial detection probability map comprising a set of spatial cells. The processor assigns a probability score to each cell as a function of: an audio analysis score generated by comparing audio data to a library of audio signatures; an audio intensity score generated by evaluating a power of at least a portion of a spectrum of the audio data; and a video analysis score generated by using an image processing algorithm to analyse the video data. The system is arranged to indicate that a UAV has been detected in one or more spatial cells if the associated probability score exceeds a predetermined detection threshold.

Storage medium, sound source direction estimation method, and sound source direction estimation device

A non-transitory computer-readable storage medium storing a program that causes a processor included in a computer mounted on a sound source direction estimation device to execute a process, the process includes calculating a sound pressure difference between a first voice data acquired from a first microphone and a second voice data acquired from a second microphone and estimating a sound source direction of the first voice data and the second voice data based on the sound pressure difference, outputting an instruction to execute a voice recognition on the first voice data or the second voice data in a language corresponding to the estimated sound source direction, and controlling a reference for estimating a sound source direction based on the sound pressure difference, based on a time length of the voice data used for the voice recognition based on the instruction and a voice recognition time length.

Sound direction detection sensor and electronic apparatus including the same

音源方向推定プログラム、音源方向推定方法、および音源方向推定装置

【課題】音源方向の推定精度を向上することを目的とする。【解決手段】音源推定プログラムは、第１マイクロホンから取得した第１音声データと、第２マイクロホンから取得した第２音声データとの音圧差を算出し、音圧差に基づいて、第１音声データおよび第２音声データの音源方向を推定し、推定された音源方向に対応する言語で第１音声データまたは第２音声データに対して音声認識を実行する指示を出力し、指示に基づく音声認識に用いた音声データの時間長と音声認識時間長とに基づいて、音圧差に基づく音源方向を推定する基準を制御する処理をコンピュータに実行させる。【選択図】図４

Storage medium, sound source direction estimation method, and sound source direction estimation device

A non-transitory computer-readable storage medium storing a program that causes a processor included in a computer mounted on a sound source direction estimation device to execute a process, the process includes calculating a sound pressure difference between a first voice data acquired from a first microphone and a second voice data acquired from a second microphone and estimating a sound source direction of the first voice data and the second voice data based on the sound pressure difference, outputting an instruction to execute a voice recognition on the first voice data or the second voice data in a language corresponding to the estimated sound source direction, and controlling a reference for estimating a sound source direction based on the sound pressure difference, based on a time length of the voice data used for the voice recognition based on the instruction and a voice recognition time length.

System for tracking a mobile target

A method and system for tracking a mobile target within a monitored space using at least three fixed directional detectors having respective responsitivities which vary with angular position around the detector and being positioned around a reference axis with their respective detection axes angularly spaced apart and inclined towards said monitored space such that the detectors have angularly overlapping response characteristics and a combined non-uniform resonsivity profile. A signal is emitted at a source on the mobile target so that the at least three detectors provide respective electrical output signals (R,G,B). Chromatic processing is effected to transform the output signals (R, G, B) into at least first and second chomatic parameters (Hs, Ls) whose values are dependent upon the position of the target in said monitored space and the position of the target is determined based on the values of the chromatic parameters (Hs, Ls).

用于音频分析的装置和方法

一种装置包括接收器(201)，其用于接收表示场景的音频的多通道音频信号。提取器(203)，其用于通过对多通道信号应用空间滤波来提取至少第一定向音频分量，其中空间滤波取决于多通道音频信号。特征处理器(205)确定第一定向音频分量的一组特征，并且分类器(207)响应于该组特征而从多个音频源类别中确定定向音频分量的第一音频源类别。分配器(209)从第一音频源类别的一组音频源属性中将第一音频源属性分配给第一定向音频分量。该装置可提供在多个通道信号中存在的各个音频源/分量的极为有利的分类和特征化。这对于例如音频事件的可视化是有利的。

Directional infrasound sensing

A method and apparatus for determining a direction of infrasound. Infrasound is received by a directional infrasound sensor comprising a plurality of channels and a plurality of sensor devices. Each channel in the plurality of channels comprises a single opening at a first end of the channel and a closed end opposite the opening. The opening of each channel in the plurality of channels is pointed in a different direction from the opening of each other channel in the plurality of channels. The plurality of sensor devices includes a sensor device at the closed end of each channel in the plurality of channels. Each sensor device in the plurality of sensor devices is configured to generate a sensor signal in response to pressure. The sensor signals generated by the plurality of sensor devices are processed to determine the direction of the infrasound received by the directional infrasound sensor.

一种具有声音位置信息的视频通讯系统及其获取方法

本发明公开了一种具有声音位置信息的视频通讯系统，包括用于采集多路声音的多个麦克风，可以接收控制命令转动或调整焦距的摄像头，和摄像头及多个麦克风相连接的处理器。处理器根据多个麦克风采集的多路语音计算音源位置信息，并根据摄像头的控制信息调整音源的位置信息。本发明解决了当摄像机镜头转动时，画面中说话人的位置和采集的声音方位信息不匹配的问题，采用本发明所述的视频通讯系统，可以使得重放的声音和画面中说话人的位置实现准确的匹配。

一种视频录制方法和电子设备

一种视频录制方法。在该方法中，第一电子设备录制包括用户在内的视频时，可以采集多帧图像，将该多帧图像进行编码，得到视频流。第一电子设备还可以利用第二电子设备发送的骨传导音频信号以及用户音频信号，得到与用户的声像方位匹配的立体声音频信号，将多帧图像对应的立体声音频信号进行编码，得到音频流，将该音频流与视频流混流，得到视频。所述视频中，所述用户的声音的声像方位与用户的视像方位是匹配的。实施本申请提供的技术方案，在录制的视频中，在用户的声音的声像方位与用户的视像方位相匹配的情况下也能保证用户的声音是清晰的。

用于音频分析的装置和方法

一种装置包括接收器(201)，其用于接收表示场景的音频的多通道音频信号。提取器(203)，其用于通过对多通道信号应用空间滤波来提取至少第一定向音频分量，其中空间滤波取决于多通道音频信号。特征处理器(205)确定第一定向音频分量的一组特征，并且分类器(207)响应于该组特征而从多个音频源类别中确定定向音频分量的第一音频源类别。分配器(209)从第一音频源类别的一组音频源属性中将第一音频源属性分配给第一定向音频分量。该装置可提供在多个通道信号中存在的各个音频源/分量的极为有利的分类和特征化。这对于例如音频事件的可视化是有利的。

使用神经网络的说话人识别/定位

提供了利用联合说话人定位/说话人识别神经网络的计算设备和方法。在一个例子中，计算设备接收用户说出的话音的多通道音频信号。从该信号中提取幅度和相位信息特征，并将其输入到通过多人的话音进行训练的联合说话人定位/说话人识别神经网络中。从神经网络接收包括说话人识别特性和位置特性的用户嵌入，并将其与从多个话音中提取的多个注册嵌入进行比较，其中，每个话音与对应的人的身份相关联。至少基于这种比较，使用户与这些人之一的身份匹配，并输出该人的身份。

声到达角检测的方法和系统

本申请公开了声到达角检测的方法和系统。所公开的声到达角检测的系统、物品和方法使用被输入到分类器神经网络的时域中的相同时间音频信号值比较和延迟时间音频信号值比较两者。

声音方向检测传感器以及包括其的电子装置

提供了能够检测声音输入方向的声音方向检测传感器以及包括所述声音方向检测传感器的电子装置。声音方向检测传感器包括接收输入声音的声音入口、输出通过声音入口输入的声音的声音出口以及以如下方式布置在声音入口和声音出口之间的多个定向振动器：至少一个定向振动器基于通过声音入口输入的声音的方向选择性地作出响应，其中，与所述多个定向振动器中具有最低输出幅值的定向振动器的方向垂直的方向被确定为声音的输入方向。

Hostile fire detection for an airborne platform

Systems and methods are presented for detecting a direction of an incoming projectile and determining a source location of the projectile. One or more resonant sensors (comprising a plate, piezo electric sensor, etc.) can be arranged, where shockwaves from the projectile (e.g., shockwaves from a bullet travelling at supersonic speeds) are incident upon the plate and cause the plate to resonate. The resonance causes an electrical signal to be generated by the piezo electric sensor (e.g., a piezo electric film sensor), the greater the degree of resonance in the plate, the higher the magnitude of signal generated by the piezo electric sensor. By comparing the magnitude of the piezo electric signals across the array of resonant sensors it is possible to determine a trajectory of the projectile and hence a location of the source of the projectile. Acoustic waves can also be generated by muzzle waves.