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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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17-05-2018 дата публикации

Система активного шумоподавления

Номер: RU0000179556U1
Автор: Андрей Александрович Травков
Принадлежит: Андрей Александрович Травков

Полезная модель относится к акустике, в частности к средствам защиты от акустических шумов. Устройство содержит блок регистрации звука, первый усилитель, аналого-цифровой преобразователь, блок селекции отчетов спектральных диапазонов частот, группу цифровых фильтров, блок синхронизации работы системы, блок селекции опорных адресов записей диапазонов частот, блок идентификации временных интервалов обработки отчетов, блок адресации текущих записей отчетов, блок приема цифровых сигналов свертки из базы данных сервера системы, цифроаналоговый преобразователь, второй усилитель и блок воспроизведения. Техническим результатом является повышение надежности шумоподавления. 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 179 556 U1 (51) МПК G10K 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G10K 11/178 (2017.08) (21)(22) Заявка: 2017116204, 11.05.2017 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Травков Андрей Александрович (RU) Дата регистрации: 17.05.2018 (56) Список документов, цитированных в отчете о поиске: RU 2545462 C2, 27.03.2015. RU 77065 U1, 10.10.2008. US 5899977 A1, 04.05.1999. EP 2800091 B1, 20.01.2016. RU 91200 U1, 27.01.2010. (45) Опубликовано: 17.05.2018 Бюл. № 14 R U (54) Система активного шумоподавления (57) Реферат: Полезная модель относится к акустике, в частности к средствам защиты от акустических шумов. Устройство содержит блок регистрации звука, первый усилитель, аналого-цифровой преобразователь, блок селекции отчетов спектральных диапазонов частот, группу цифровых фильтров, блок синхронизации работы системы, блок селекции опорных адресов записей диапазонов частот, блок идентификации Стр.: 1 временных интервалов обработки отчетов, блок адресации текущих записей отчетов, блок приема цифровых сигналов свертки из базы данных сервера системы, цифроаналоговый преобразователь, второй усилитель и блок воспроизведения. Техническим результатом является повышение ...

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Номер записи: 1
04-02-2020 дата публикации

Устройство для снижения внутреннего шума в кабине транспортного средства с дизельным двигателем

Номер: RU0000195716U1
Автор: Алексей Николаевич Кузнецов, Дмитрий Юрьевич Терехов, Олег Иванович Поливаев
Принадлежит: Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ)

Полезная модель относиться к транспортному машиностроению, а именно к устройствам снижения внутреннего шума в кабине транспортного средства с дизельным двигателем. Система активного шумоподавления содержит два микрофона, закрепленные на спинке сидения. Микрофоны устанавливаются вблизи уха оператора, для создания тишины, в области головы, не вмешиваясь в смежные зоны и ИАЗ (динамиками), установленными в кабине и направленными на оператора. ЭБУ связан с датчиками положение педали акселератора положение коленчатого вала, положения кресла водителя. Система активного подавления шумов контролирует звук максимально близко к объекту и обеспечивает антизвук, соответствующий контролируемой области, не вмешиваясь в другие зоны. Микрофоны размещаются вблизи человеческого уха и обеспечивают обнаружение входных сигналов для ЭБУ. Выходной сигнал ЭБУ подходит к паре динамиков, которые являются смежными с датчиками. Это производит отмену идентифицированного шумового сигнала, не мешая при этом другим звукам достигнуть уха человека. Технический результат - снижение вибрационного и акустического воздействия на водителя. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 716 U1 (51) МПК B60R 13/08 (2006.01) B62D 33/06 (2006.01) G10K 11/178 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B60R 13/08 (2019.05); B62D 33/06 (2019.05); G10K 11/178 (2019.05) (21)(22) Заявка: 2019118558, 14.06.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 04.02.2020 (45) Опубликовано: 04.02.2020 Бюл. № 4 1 9 5 7 1 6 R U (56) Список документов, цитированных в отчете о поиске: US 5629986 A1, 13.05.1997. US 20170330551 A1, 16.11.2017. US 5701349 A1, 23.12.1997. RU 2646147 C1, 01.03.2018. RU 2688548 C2, 21.05.2019. (54) Устройство для снижения внутреннего шума в кабине транспортного средства с дизельным двигателем (57) Реферат: Полезная модель относиться к транспортному контролирует звук максимально близко к объекту ...

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Номер записи: 2
25-10-2021 дата публикации

Устройство защиты акустической информации от негласного получения портативным устройством

Номер: RU0000207342U1
Автор: Владимир Николаевич Световидов
Принадлежит: Владимир Николаевич Световидов

Полезная модель относится к области защиты речевой информации, а более конкретно к устройству для предотвращения негласного получения акустических сигналов портативными устройствами, размещенными в нем. Технический результат, достигаемый при реализации указанного решения, заключается в повышении эффективности защиты речевой информации от негласного получения портативным устройством. Устройство защиты акустической информации от негласного получения портативным устройством содержит: экранирующий корпус, включающий: звукопоглощающий слой; запирающий механизм; ячейки для хранения портативных устройств: генератор ультразвуковых помех, выполненный с возможностью генерации ультразвукового шумового сигнала; генератор акустических помех, выполненный с возможностью генерации шумового сигнала; ультразвуковые излучатели; акустические излучатели; источник питания; экранированный разъем; модуль сетевого взаимодействия. 6 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 342 U1 (51) МПК G10K 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H04K 3/00 (2021.08); G10K 11/175 (2021.08) (21)(22) Заявка: 2021115572, 20.07.2021 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Световидов Владимир Николаевич (RU) Дата регистрации: 25.10.2021 Приоритет(ы): (22) Дата подачи заявки: 20.07.2021 (45) Опубликовано: 25.10.2021 Бюл. № 30 2 0 7 3 4 2 R U (54) УСТРОЙСТВО ЗАЩИТЫ АКУСТИЧЕСКОЙ ИНФОРМАЦИИ ОТ НЕГЛАСНОГО ПОЛУЧЕНИЯ ПОРТАТИВНЫМ УСТРОЙСТВОМ (57) Реферат: Полезная модель относится к области защиты включающий: звукопоглощающий слой; речевой информации, а более конкретно к запирающий механизм; ячейки для хранения устройству для предотвращения негласного портативных устройств: генератор получения акустических сигналов портативными ультразвуковых помех, выполненный с устройствами, размещенными в нем. Технический возможностью генерации ультразвукового результат, достигаемый при реализации ...

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Номер записи: 3
19-01-2012 дата публикации

Domestic appliance having at least one noise-deadening and/or sound-insulating coating and associated production method

Номер: US20120012420A1
Автор: Bernd Schwenk, Egbert Classen, Heiko Fritz
Принадлежит: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH

A domestic appliance, in particular a domestic dishwasher, includes at least one component, and at least one noise-deadening and/or sound-insulating coating applied on the component. The noise-deadening and/or sound-insulating coating includes or is made entirely of a reactively cured bituminous mixture. The component can be a wall section for delimiting a rinsing chamber of the dishwasher, or can be a base tray of a rinsing container of the dishwasher.

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Номер записи: 4
02-02-2012 дата публикации

Noise attenuator and vehicle air intake duct provided therewith

Номер: US20120024623A1
Автор: Katsuhiro Tange, Takashi Yamaguchi
Принадлежит: Inoac Corp

A noise attenuator which can reduce time and cost for installation thereof as compared with the conventional configuration and a vehicle air intake duct provided with the noise attenuator are provided. The noise attenuator includes a pair of circular through holes formed through a duct wall, a pair of wave transmitting/receiving membrane which are stretched so as to close the circular through holes, and a seesaw member which connects between central portions of the paired transmitting/receiving membranes. Accordingly, when one of the membranes receives a sound wave of noise thereby to be vibrated at a predetermined frequency, the other membrane follows it and is also vibrated while shifted by a half cycle. As a result, a cancellation wave with a phase opposite to the sound wave received by the one membrane is transmitted from the other membrane, whereupon the noise can be attenuated.

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Номер записи: 5
02-02-2012 дата публикации

Composite sound absorber

Номер: US20120024626A1
Автор: Marek Kierzkowski, Michael William Coates, Philip John Gibbons
Принадлежит: Eman8 Pty Ltd

A sound absorbing material comprising a nonwoven fibrous acoustic insulation material and a flow resistive non-woven facing, wherein the flow resistive nonwoven facing is bonded to the insulation material and has an air flow resistance of from about 600 to about 1800 Rayls and a surface mass of from about 20 to about 150 g/m 2 .

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Номер записи: 6
15-03-2012 дата публикации

Apparatus and method for providing acoustic metamaterial

Номер: US20120061176A1
Автор: Minas H. Tanielian
Принадлежит: Boeing Co

A method for fabricating an acoustic metamaterial may include providing a planar pattern of springs arranged in columns and rows and separated from each other by interconnection nodes, providing a planar pattern of mass units separated from each other by a distance corresponding to a distance between the interconnection nodes, providing an array of vertically oriented springs separated from each other by the distance between the interconnection nodes, and aligning and joining the planar pattern of springs, the planar pattern of mass units and the array of vertically oriented springs to form a layer of unit cells.

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Номер записи: 7
22-03-2012 дата публикации

Method and device for narrow-band noise suppression in a vehicle passenger compartment

Номер: US20120070013A1
Автор: Bernard Vau
Принадлежит: IXMOTION

A method and a device for suppressing noise in the passenger compartment of a vehicle, which include at least one transducer, a programmable computer, at least one acoustic sensor, the computer being configured such as to apply an electro-acoustic model of the passenger compartment to a correcting system model including a central controller with fixed coefficients joined to a block of variable coefficients, including a Youla parameter in the form of a Youla block Q. The first phase includes determining and calculating the electro-acoustic model and the control law for at least one predetermined noise frequency. In a second phase, in real time, the computer applies the control law to the electro-acoustic model in accordance with the current frequency of the noise to be suppressed.

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Номер записи: 8
12-04-2012 дата публикации

Communication headset

Номер: US20120087519A1
Автор: Niklas D.B. EMILSSON
Принадлежит: 3M Innovative Properties Co

A communication headset is disclosed. The headset comprises two earpieces: a first earpiece, having a first arm, positionable in front of a wearer's ear and a second arm, positionable behind a wearer's ear, with a first bone conduction speaker carried on the second arm; and a second earpiece, having a first arm, positionable in front of a wearer's ear and a second arm, positionable behind a wearer's other ear, with a second bone conduction speaker carried on the second arm. A first microphone is carried on the first earpiece, and is adapted to detect ambient sound from at least a first direction. A second microphone is carried on the second earpiece, and is adapted to detect ambient sound from at least a second direction.

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Номер записи: 9
19-04-2012 дата публикации

Ultrasound catheter for providing a therapeutic effect to a vessel of a body

Номер: US20120095389A1
Автор: Frederick J. Bennett, Gary Lichttenegger, James E. Rodriguey, John Zhang, Katsuro Tachibana
Принадлежит: Ekos LLC

The invention relates to a catheter system. The system comprises a catheter body having a chamber containing a low acoustic impedance medium. The catheter body includes an elongated body with an external surface and an ultrasound transducer having an external side between a first end and a second end. The ultrasound transducer is positioned over the external surface of the elongated body such that the first end is adjacent to the chamber.

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Номер записи: 10
21-06-2012 дата публикации

Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers

Номер: US20120152650A1
Автор: Daniel Peter Elford, Feodor Kusmartsev, Gerard Michael Swallowe, Luke Chalmers
Принадлежит: Loughborough University

An attenuator for attenuating acoustic waves, the attenuator comprising: a first body defining a cavity therein and an elongate open aperture extending across a substantial portion of the first body, the first body being configured to attenuate acoustic waves over a resonant frequency band.

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Номер записи: 11
28-06-2012 дата публикации

Operational noise control method for air conditioner

Номер: US20120164931A1
Автор: Masaki Ohtsuka, Yasukata Takeda
Принадлежит: Individual

An operation noise control method for an air conditioner includes: a step (S 1 ) of detecting an operation mode of the air conditioner; a step (S 2 ) of operating an air flow guide panel ( 20 ) in accordance with the detected operation mode and controlling the air flow guide panel ( 20 ) so as to form a duct-like outlet passage ( 10 ) in a vicinity of an outlet ( 5 ); a step (S 3 ) of selecting a sound wave which is preset in accordance with the operation mode; and a step (S 4 ) of radiating the selected sound wave in the duct-like outlet passage ( 10 ) from a speaker ( 21 ).

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Номер записи: 12
05-07-2012 дата публикации

Noise attenuation panel and a gas turbine component comprising a noise attenuation panel

Номер: US20120168248A1
Автор: Lars-Erik Eriksson, Markus Olander Burak
Принадлежит: Volvo Aero Corp

A noise attenuation panel includes a first wall, a second wall and partition walls connected to the first and second walls and defining cells between the first and second walls. The first wall is provided with a plurality of through holes. At least two of the cells are interconnected via a communication hole. One of the through holes leads to a first of the at least two interconnected cells and a second of the interconnected cells is configured to prevent any gas flow through the second cell.

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Номер записи: 13
12-07-2012 дата публикации

Active noise-cancellation feedback signal transmission

Номер: US20120177213A1
Автор: Laurent Le Faucheur
Принадлежит: Texas Instruments Inc

A noise-cancelling system includes headset for generating a feedback signal for noise-cancellation in response to sound externally generated from the headset. An encoded microphone signal is generated in response to the first feedback signal. An audio generator can be used to generate a noise-cancellation signal in response to the encoded microphone signal and to generate an electronic audio signal in response to the encoded microphone signal and a first output audio signal. An audio connector is provided to couple the encoded microphone signal from the headset to the audio generator and to couple the first electronic audio signal to the headset.

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Номер записи: 14
16-08-2012 дата публикации

Panel for acoustic treatment comprising a junction between two parts and process for the reparation of a panel for acoustic treatment

Номер: US20120205192A1
Автор: Veronique Bornert-Dano
Принадлежит: AIRBUS OPERATIONS SAS

An acoustic treatment panel includes two portions with edges spaced in one direction, and from the outside to the inside, a first acoustically resistive layer, a first alveolar structure, and a reflective layer, and a block inserted between the two edges which includes, from the outside to the inside, a second acoustically resistive layer arranged at the first acoustically resistive layer and a second alveolar structure. The block includes at least one sector of alveolar structures with sloped pipes whose height is less than that of the first alveolar structure, whereby the pipes are sloped in a direction such that the ends of the pipes are close to one of the edges of the portions at the first acoustically resistive layer, and the opposite ends of the pipes are moved away from the edge and the reflective layer so as to house connecting elements between the block and the panel.

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Номер записи: 15
06-09-2012 дата публикации

Vibration damping device and vehicle provided with the vibration damping device

Номер: US20120226414A1
Автор: Hideaki Moriya, Takeo Ito, Takeshi Tomizaki, Yasushi Muragishi
Принадлежит: Sinfonia Technology Co Ltd

A damping device includes a calculator calculating a pseudo vibration to cancel a source vibration transmitted from a vibration source to a position to be damped, using an adaptive control algorithm. The canceling vibration is generated according to the pseudo vibration. A vibration detector detects an error vibration remaining at the position. The adaptive control algorithm is adapted by learning to reduce the error vibration. A frequency recognizer recognizes a frequency of the source vibration from a signal related to the vibration source. The frequency of the vibration is used to determine a frequency of the pseudo vibration. A phase difference identifier identifies a phase difference between the error vibration and the canceling vibration according to the pseudo vibration, and a frequency corrector corrects, according to the phase difference, the frequency of the vibration to eliminate the phase difference.

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Номер записи: 16
20-09-2012 дата публикации

Soundproof material for vehicle

Номер: US20120234626A1
Автор: Hidekimi TAKAHASHI, Hiroyuki Honda, Masaki Ishikawa, Yuji Mori
Принадлежит: Takehiro Co Ltd

A first sound absorbing material to be located facing a vehicle room interior side, the air-impermeable material having an air-impermeable film having bonding hot-melts on both sides thereof, and the second sound absorbing material to be located facing a vehicle room exterior side are laminated in this order, and are closely-located between two heating boards and are supplied with hot air to melt hot-melts and thus to make a laminate. The laminate is cold press molded with the first sound absorbing material on a lower mold, and at the same time as the press molding, compressed gas is supplied from an upper mold to apply pressure on the air-impermeable material and thus to compression mold the first sound absorbing material.

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Номер записи: 17
15-11-2012 дата публикации

System and method for noise suppression

Номер: US20120285768A1
Автор: Alan Richard Douglas, Ray Listak
Принадлежит: Rohr Inc

Systems and methods for noise suppression are disclosed herein. In one embodiment, an acoustic structure has a core that includes a plurality of cells. Each of the plurality of cells includes one or more engaging structures for positioning a septum relative to the cell. The acoustic structure further includes a plurality of septums positioned relative to the plurality of cells.

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Номер записи: 18
29-11-2012 дата публикации

Sender communications for wireless power transfer

Номер: US20120299540A1
Автор: Meredith Perry
Принадлежит: Ubeam Inc

A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.

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Номер записи: 19
29-11-2012 дата публикации

Receiver communications for wireless power transfer

Номер: US20120300588A1
Автор: Meredith Perry
Принадлежит: Ubeam Inc

A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.

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Номер записи: 20
29-11-2012 дата публикации

Active vibration noise control device

Номер: US20120300955A1
Автор: Akihiro Iseki, Kensaku Obata, Yoshiki Ohta, Yoshitomo Imanishi
Принадлежит: Pioneer Corp

An active vibration noise control device cancels vibration noise by making plural speakers generate control sounds. The active vibration noise control device selects one or more speakers which output the control sounds, from plural speakers, based on a relationship between (1) a first phase difference which corresponds to a difference between phase characteristics of the vibration noise from a vibration noise source to an evaluation point and phase characteristics of the vibration noise from the vibration noise source to a pseudo evaluation point and (2) a second phase difference for each of the plural speakers corresponding to a difference between phase characteristics of the control sound from the speaker to the evaluation point and phase characteristics of the control sound from the speaker to the pseudo evaluation point. Therefore, it stably decreases the vibration noise at the pseudo evaluation point independently of a frequency band of the vibration noise.

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Номер записи: 21
06-12-2012 дата публикации

Adaptive noise canceling architecture for a personal audio device

Номер: US20120308025A1
Автор: Ali Abdollahzadeh Milani, Gautham Devendra Kamath, Jeffrey Alderson, Jon D. Hendrix, Nitin Kwatra
Принадлежит: Cirrus Logic Inc

A personal audio device, such as a wireless telephone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal that measures the ambient audio and an error microphone signal that measures the output of an output transducer plus any ambient audio at that location and injects the anti-noise signal at the transducer output to cause cancellation of ambient audio sounds. A processing circuit uses the reference and error microphone to generate the anti-noise signal, which can be generated by an adaptive filter operating at a multiple of the ANC coefficient update rate. Downlink audio can be combined with the high data rate anti-noise signal by interpolation. High-pass filters in the control paths reduce DC offset in the ANC circuits, and ANC coefficient adaptation can be halted when downlink audio is not detected.

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Номер записи: 22
06-12-2012 дата публикации

Replay apparatus, signal processing apparatus, and signal processing method

Номер: US20120310636A1
Автор: Kazunobu Ookuri, Kohei Asada, Yasunobu Murata
Принадлежит: Sony Corp

A method of selectively performing signal processing in a first mode and in a second mode. In the first mode, a noise cancel signal having a signal characteristic to cancel an external noise component is generated based on a voice signal supplied from a microphone, and an input digital audio signal and the noise cancel signal are combined into a voice signal to be output through a speaker. In the second mode, a sound process for vocal voice is performed on a voice signal supplied from a microphone, a vocal voice component is canceled from a digital audio signal of input music to generate a karaoke signal, and the karaoke signal and the vocal signal are combined into a voice signal to be output through a speaker. The first mode corresponds to an audio replay operation accompanied by noise cancel, and the second mode corresponds to a karaoke operation.

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Номер записи: 23
27-12-2012 дата публикации

Noise and vibration mitigating mat

Номер: US20120325577A1
Автор: Paul C. Downey
Принадлежит: Individual

A noise and vibration mitigating mat having top and bottom surfaces comprises a first layer formed of recycled bound rubber product, the first layer having a contoured bottom surface and a generally flat top surface, a second layer on the top surface of the first layer, the second layer being formed of a fabric and a third layer on the second layer and being formed of recycled rubber product.

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Номер записи: 24
10-01-2013 дата публикации

Anti-sound system for exhaust systems and method for controlling the same

Номер: US20130013147A1
Автор: Andre Mengel, Christof Luecking
Принадлежит: J Eberspaecher GmbH and Co KG

Based on sound measured in the interior of an exhaust system components of an ideal control signal are calculated, the components comprising sine wave oscillations comprising amplitudes phase-shifted by 90° relative to each other. From the amplitudes, an overall amplitude is calculated. If the overall amplitude is greater than a reference amplitude, calculating a correction factor from the reference amplitude and the overall amplitude, weighting the amplitudes with the correction factor to obtain weighted amplitudes, and forming the sum of the products of the weighted amplitudes with the associated sine wave oscillations and outputting the sum as control signal to a loudspeaker, follows. Otherwise, if the overall amplitude is smaller or equal to the reference amplitude, forming the sum of the products of the amplitudes of the ideal control signal with the associated sine wave oscillations and outputting the sum as control signal to the loudspeaker, follows.

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Номер записи: 25
31-01-2013 дата публикации

Acoustic Array of Polymer Material

Номер: US20130025967A1
Автор: David C. Seib
Принадлежит: Dresser Rand Co

The invention is an acoustic liner for attenuating noise in rotating machinery. The acoustic liner may include a plurality of cells coupled together to form an annular cell matrix, the plurality of cells being made of a non-metallic material, for example, plastics, polymers, thermoplastics, or thermosets. Each cell of the acoustic liner may be hexagonally-shaped such that the annular cell matrix forms a honeycomb structure.

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Номер записи: 26
21-02-2013 дата публикации

Active vibration noise control device

Номер: US20130044891A1
Автор: Akihiro Iseki, Kensaku Obata, Yoshiki Ohta, Yoshitomo Imanishi
Принадлежит: Pioneer Corp

The disclosed active vibration noise control device is suitable for use in cancelling out vibration noise by outputting control noise from a plurality of speakers. When a vibration noise frequency is in a dip bandwidth, the active vibration noise control device alters the step size parameters used to update the filter coefficient at at least one filter coefficient update means from among a plurality of filter coefficient update means. Thus, the filter coefficient update speed can be retarded in unstable dip bandwidths, enabling loss in silencing effect which occurs during dip characteristics to be appropriately reduced.

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Номер записи: 27
28-02-2013 дата публикации

Multi-Layered Sound Attenuation Mechanism

Номер: US20130048417A1
Автор: Nitin Vaidya, Prashant Unnikrishnan Nair
Принадлежит: Schlumberger Technology Corp

A sound attenuation mechanism made up of multiple substrate layers, including corrugated layers. The use of corrugation provides an inexpensive and manner of forming a plurality of highly effective acoustic attenuation channels throughout the mechanism. The multi-layered mechanism may be provided in a variety of modular forms and sizes which may be combined to form a low-cost, highly effective attenuation housing. For example, such a housing may be utilized to contain otherwise noisy large scale oilfield equipment such as coiled tubing engines. Additionally, where drainage from the housing is sought, a spiraled attenuation channel may be employed such that the effectiveness of the attenuation provided by the housing is not sacrificed.

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Номер записи: 28
14-03-2013 дата публикации

Information signal representation using lapped transform

Номер: US20130064383A1
Автор: Eleni FOTOPOULOU, Emmanuel Ravelli, Markus Schnell, Ralf Geiger
Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV

An information signal reconstructor is configured to reconstruct, using aliasing cancellation, an information signal from a lapped transform representation of the information signal including, for each of consecutive, overlapping regions of the information signal, a transform of a windowed version of the respective region, wherein the information signal reconstructor is configured to reconstruct the information signal at a sample rate which changes at a border between a preceding region and a succeeding region of the information signal.

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Номер записи: 29
14-03-2013 дата публикации

Speech enhancement method

Номер: US20130066626A1
Автор: Hsien Cheng Liao
Принадлежит: Industrial Technology Research Institute ITRI

A speech enhancement method is disclosed. The method includes the steps of: receiving a plurality of frames of sound signals by a microphone array; calculating an inter-aural time difference for each frequency band of each frame of the sound signals corresponding to at least one two-microphone set of the microphone array; calculating a plurality of values of cumulative histograms according to the calculated inter-aural time differences; determining a first inter-aural time difference threshold according to the calculated value of the cumulative histograms; and filtering the plurality of frames of sound signals according to the first inter-aural time difference threshold.

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Номер записи: 30
28-03-2013 дата публикации

WASHING MACHINE

Номер: US20130077809A1
Автор: Park Young Bae
Принадлежит:

The present invention relates to a washing machine in which the quality of a signal sound containing information on the washing machine is improved, wherein said signal sound is outputted by a signal sound output unit. More particularly, the present invention relates to a washing machine, comprising: the signal sound output unit which outputs, in a signal sound, information on the washing machine; and a signal sound guide unit which is arranged along the periphery of the signal sound output unit to form a sound path between the signal sound output unit and the signal sound guide unit, wherein one end of the signal sound guide unit is for reflecting the signal sound outputted by the signal sound output unit, and the other end thereof is open so as to output the signal sound transmitted through the sound path. 1. A washing machine comprising:a signal sound output unit that outputs product information as a sound signal; anda signal sound guide unit that is formed along a circumference of the signal sound output unit and forms a sound path between the signal sound guide unit and the signal sound output unit, wherein the signal sound guide unit includes at an end thereof a reflecting end to reflect a signal sound output from the signal sound output unit and at another end thereof an opened end through which a signal sound transferred through the sound path is output.2. The washing machine of claim 1 , wherein the signal sound guide unit includes claim 1 ,a first rib connected to the reflecting end; anda second rib connected to the opened end, wherein a width of a sound path section formed between the first rib and the signal sound output unit is smaller than a width of a sound path section formed between the second rib and the signal sound output unit.3. The washing machine of claim 1 , further comprising a casing that forms an outer appearance of the washing machine claim 1 , wherein the signal sound output unit is provided at a rear surface of the casing claim 1 , and ...

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Номер записи: 31
04-04-2013 дата публикации

CHARGED PARTICLE RADIATION DEVICE AND SOUNDPROOF COVER

Номер: US20130082194A1
Автор: Matsushima Masaru, Muto Daisuke, Tsuji Hiroshi, Watanabe Masanori
Принадлежит:

A charged particle radiation device includes a sample chamber in which a sample stage adapted to mount a sample is installed, a charged particle radiation irradiation section adapted to irradiate the sample with a charged particle radiation to observe and fabricate the sample, sidewalls installed on a periphery of the sample chamber and the charged particle radiation irradiation section, a ceiling board installed on a plane located in an upper part of the sidewalls, and a sound absorbing structure section disposed below the ceiling board, and including a plurality of hole sections and a hollow section communicated with the hole sections. The sound absorbing structure section has an absorption band including a frequency band of a standing wave generated in a space surrounded by the sidewalls and the ceiling board. Further, a soundproof cover may include the sidewalls, ceiling board and sound absorbing structure. 1. A charged particle radiation device characterized by comprising:a sample chamber in which a sample stage adapted to mount a sample is installed;a charged particle radiation irradiation section adapted to irradiate the sample with a charged particle radiation to observe and fabricate the sample;sidewalls installed on a periphery of the sample chamber and the charged particle radiation irradiation section;a ceiling board installed on a plane located in an upper part of the sidewalls; anda sound absorbing structure section disposed below the ceiling board, and including a plurality of hole sections and a hollow section communicated with the hole sections,wherein the sound absorbing structure section has an absorption band including a frequency band of a standing wave generated in a space surrounded by the sidewalls and the ceiling board.2. The charged particle radiation device according to claim 1 , characterized in thatthe frequency of the standing wave is included in one of a frequency taking a local maximum value of the absorption band of the sound ...

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Номер записи: 32
11-04-2013 дата публикации

High Bandwidth Antiresonant Membrane

Номер: US20130087407A1
Автор: Chia-Ming Chang, Geoffrey P. Mcknight
Принадлежит: HRL LABORATORIES LLC

A membrane is disclosed. The membrane contains a first weight disposed at a center portion of the membrane, and a first hinge structure disposed away from the center portion of the membrane.

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Номер записи: 33
18-04-2013 дата публикации

Method and device for improving the audibility, localization and intelligibility of sounds, and comfort of communication devices worn on or in the ear

Номер: US20130094657A1
Автор: Anthony John BRAMMER, Eric Raczka Bernstein
Принадлежит: University of Connecticut

A method and device are provided for maintaining or improving the audibility, localization and/or intelligibility of sounds from electro-acoustic devices worn on the head or in the ear, such as headphones, headsets, hearing protectors, earplugs, and earbuds, as well as in combination with or built into hard hats and helmets, and for improving their comfort to the user.

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Номер записи: 34
09-05-2013 дата публикации

Attenuating mass for an ultrasonic sensor, use of epoxy resin

Номер: US20130114379A1
Автор: Karl-Friedrich Pfeiffer, Manfred Roth, Volker Muhrer, Walter Fischer
Принадлежит: Continental Automotive GmbH

Temperature stability at the temperatures prevailing in a motor and stability that is required over an entire temperature range are provided by an attenuating mass. This enables continuous use at temperatures of approximately 150° C. while providing ultrasonic attenuation at low temperatures.

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Номер записи: 35
16-05-2013 дата публикации

Structure having sound absorption characteristic

Номер: US20130118831A1
Автор: Chie Kato, Junichi Kawai, Satoshi Mihara
Принадлежит: Aisin Chemical Co Ltd

To absorb a noise produced by an external force that generates an audio frequency even if it is applied thereto, and to make it hard to become a noise source to a surrounding area. It includes a surface layer 20 having microscopic pores 21 formed on a surface 20 A, communicating passages 24 communicating with the microscopic pores 21 and a porous layer 10 having sound pores 14 that are formed at an inner part deeper than the surface layer 20 having the microscopic pores 21 formed, communicate with the communicating passage 24 and that have a volume larger than volumes of the microscopic pore 21 formed on the surface 20 A and the communicating passage 24 . A sound absorption characteristic and/or a sound insulation characteristic is provided by the microscopic pores 21 of the surface 20 A, the communicating passages 24 of the porous layer 10 , and the sound pores 14 of the porous layer 10 . Accordingly, sound absorption control including sound insulation in a predetermined audio frequency band can be achieved and a high sound absorption characteristic can be provided.

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Номер записи: 36
16-05-2013 дата публикации

Frequency Domain Signal Processor For Close Talking Differential Microphone Array

Номер: US20130121499A1
Автор: Li Yunhong, Ma Wei, SUN Lin
Принадлежит: National Semiconductor Corporation

A system and method for processing close talking differential microphone array (CTDMA) signals in which incoming microphone signals are transformed from time domain signals to frequency domain signals having separable magnitude and phase information. Processing of the frequency domain signals is performed using the magnitude information, following which phase information is reintroduced using phase information of one of the original frequency domain signals. As a result, high pass filtering effects of conventional differential signal processing of CTDMA signals are substantially avoided. 1. A circuit for processing microphone signals from a differential microphone array that includes a plurality of microphones each providing an analog microphone output , the circuit comprising:time-to-frequency domain conversion circuitry configured to receive time domain microphone signals corresponding to respective analog microphone outputs, and to provide corresponding respective frequency domain microphone signals characterized by frequency domain magnitude and phase signals; andfrequency domain processing circuitry configured to process at least two frequency domain magnitude signals, and to provide a corresponding frequency domain processed magnitude signal;phase recovery circuitry configured to receive the frequency domain processed magnitude signal and at least one of the frequency domain microphone signals, and to provide a frequency domain resultant signal with magnitude information corresponding the frequency domain processed magnitude signal and phase information corresponding to the phase of the at least one frequency domain microphone signal; andfrequency-to-time domain conversion circuitry configured to convert the frequency domain resultant signal to a time domain resultant signal.2. The circuit of claim 1 , wherein said time-to-frequency domain conversion circuitry comprises Fourier Transform circuitry.3. The circuit of :further comprising analog-to-digital ...

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Номер записи: 37
23-05-2013 дата публикации

SPEAKER WITH MULTIPLE INDEPENDENT AUDIO STREAMS

Номер: US20130129103A1
Автор: Donaldson Thomas Alan
Принадлежит: AliphCom

The various embodiments relate generally to systems, devices, apparatuses, and methods for providing audio streams to multiple listeners, and more specifically, to a system, a device, and a method for providing independent listener-specific audio streams to multiple listeners using a common audio source, such as a set of loudspeakers, and, optionally, a shared audio stream. In some embodiments, a method includes identifying a first audio stream for reception at a first region to be canceled at a second region, and generating a cancellation signal that is projected in another audio stream destined for the second region. The cancellation signal and the first audio steam are combined at the second region. Further, a compensation signal to reduce the cancellation, signal at the first region can be generated. 1. A method comprising:identifying a first audio stream for reception at a first region to be canceled at a second region;modifying the first audio stream to form a modified first audio stream;designating the modified first audio stream to be projected via a second channel loudspeaker and the first audio stream via a first channel loudspeaker to the second region;combining the modified first audio stream and the first audio stream to reduce the first audio steam at the second region; andgenerating a compensation signal to reduce the modified first audio stream at the first region.2. The method of claim 1 , wherein modifying the first audio stream to form the modified first audio stream further comprises:forming a plurality of cancellation signals including the modified first audio stream to be projected via the second channel loudspeaker; andforming recursively a plurality of compensation signals including the compensation signal to compensate for the presence of the plurality of cancellation signals at the first region.3. The method of claim 1 , wherein forming recursively the plurality of compensation signals further comprises:determining a magnitude of one of the ...

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Номер записи: 38
23-05-2013 дата публикации

System and method for acoustic noise mitigation in a computed tomography scanner

Номер: US20130129104A1
Автор: Ashutosh Joshi, Joseph James Lacey
Принадлежит: General Electric Co

A CT system is provided that includes an outer housing, a rotatable gantry positioned within the outer housing and having a gantry opening to receive an object to be scanned, an x-ray source mounted on the rotatable gantry and configured to project an x-ray beam toward the object, and a detector array mounted on the rotatable gantry and configured to detect x-ray energy passing through the object and generate a detector output responsive thereto that can be reconstructed into an image of the object. A hybrid noise mitigation system is included in the CT system that is configured to mitigate noise generated by the CT system during operation, the hybrid noise mitigation system comprising a passive noise mitigation device configured to control noise in a passive manner and an active noise mitigation device configured to control noise in an active manner.

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Номер записи: 39
23-05-2013 дата публикации

TUNABLE ACTIVE NOISE CONTROL

Номер: US20130129108A1
Автор: Wurm Michael
Принадлежит: Harman Becker Automotive Systems GmbH

An active noise control system and method for tuning an acoustic noise signal at a listening position are disclosed in which a first weighting element is connected in the filter coefficient copy path and/or a second weighting element is connected in the microphone path. 1. An active noise control system for tuning an acoustic noise signal at a listening position , the system comprises:a microphone that converts acoustic signals into electric signals and that is arranged at the listening position;a loudspeaker that converts electrical signals into acoustic signals and that radiates a noise cancelling signal via a second path to the microphone;a secondary noise source that generates an electrical noise signal modeling the acoustic noise signal;a first filter that has a controllable first transfer characteristic and that is connected between the secondary noise source and the loudspeaker;a second filter that has a second transfer characteristic and that is connected downstream of the secondary noise source;a third filter that has a controllable third transfer characteristic and that is connected downstream of the second filter;a noise signal estimator that is connected downstream of the microphone and that provides an estimate of the acoustic noise signal; andan adaptive filter controller that is downstream of the second filter and downstream of the noise signal estimator and that controls the transfer characteristic of the third filter; in whichthe second transfer characteristic is an estimation of the transfer characteristic of the secondary path;the first transfer characteristic is controlled by the third transfer characteristic via a filter coefficient copy path; anda first weighting element is connected into the filter coefficient copy path and/or a second weighting element is connected downstream of the noise signal estimator.2. The system of claim 1 , in which the noise signal estimator comprises a fourth filter that has a fourth transfer characteristic and that ...

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Номер записи: 40
30-05-2013 дата публикации

Active vibration noise control apparatus

Номер: US20130136269A1
Автор: Kosuke Sakamoto, Toshio Inoue
Принадлежит: Honda Motor Co Ltd

An active vibration noise control apparatus cancels out vibration noise generated in the passenger compartment of a vehicle when the vehicle is traveling, by outputting canceling vibration noise. The active vibration noise control apparatus includes a frequency switcher. The frequency switcher calculates a phase angle change between a phase angle in a complex space of a filter coefficient of an adaptive notch filter and a previous phase angle calculated when the filter coefficient is updated previously, and changes a target frequency of a reference signal depending on the calculated phase angle change.

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Номер записи: 41
30-05-2013 дата публикации

ACTIVE VIBRATION NOISE CONTROL APPARATUS

Номер: US20130136270A1
Автор: INOUE Toshio, Sakamoto Kosuke
Принадлежит: HONDA MOTOR CO., LTD.

An active vibration noise control apparatus is provided. When a vehicle speed changes thereby to change frequency characteristics (peak-amplitude frequency) of vibration noise, the active vibration noise control apparatus refers to a vehicle speed versus frequency correspondence table representing a correspondence relation between a vehicle speed of a vehicle and a frequency of a reference signal, and changes the frequency of the reference signal that is used by an adaptive notch filter. 1. An active vibration noise control apparatus comprising:a vibration noise canceller for outputting a canceling sound based on a canceling signal to cancel out vibration noise;an error signal detector for detecting residual noise due to an interference between the vibration noise and the canceling sound as an error signal; andan active vibration noise controller for generating the canceling signal in response to the error signal input thereto;wherein the active vibration noise controller comprises:a reference signal generator for generating a reference signal having a frequency;an adaptive notch filter for outputting a control signal in response to the reference signal input thereto;a phase/amplitude adjuster for storing therein a phase or amplitude adjusting value depending on the frequency of the reference signal, and generating the canceling signal by adjusting a phase or amplitude of the control signal with the phase or amplitude adjusting value;a corrective error signal generator for generating a corrective error signal by subtracting the control signal before the adjustment, from the error signal;a filter coefficient updater for sequentially updating filter coefficients of the adaptive notch filter so as to minimize the corrective error signal based on the reference signal and the corrective error signal;a vehicle speed detector for detecting a vehicle speed of a vehicle which incorporates the active vibration noise control apparatus; anda frequency switcher for storing ...

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Номер записи: 42
06-06-2013 дата публикации

Sound insulation material and method for preparing the same

Номер: US20130140108A1
Автор: Hiroaki Keneda, Shinichiro Emori, Taisuke Kameoka
Принадлежит: Nishikawa Rubber Co Ltd

Two sheets of nonwoven fabric with the same shape and size each including a rectangular body 11 a and a funnel-shaped projection 11 b projecting from one side of the body 11 a are stacked, and bonded together by heat welding at each side of the body 11 a except the projection 11 b and both sides of the projection 11 b. Joint portions 13 a, 13 b, 13 c, and 13 d projecting inward from a joint 13 are located on three sides and four corners of the body 11 a except the side provided with the projection 11 b, and project to depths at which the joints do not interfere insertion of a nozzle 16 into a center portion of the bag. The nozzle 16 is inserted through an opening 15 of the projection 11 b, and the bag is filled with a granular elastic material 12. Then, the projection 11 b is removed, and the opening is closed.

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Номер записи: 43
06-06-2013 дата публикации

SOUND SOURCE SEPARATION DEVICE, SOUND SOURCE SEPARATION METHOD AND PROGRAM

Номер: US20130142343A1
Автор: Ishikawa Yoji, Matsui Shinya, Nagahama Katsumasa
Принадлежит: ASAHI KASEI KABUSHIKI KAISHA

With conventional source separator devices, specific frequency bands are significantly reduced in environments where dispersed static is present that does not come from a particular direction, and as a result, the dispersed static may be filtered irregularly without regard to sound source separation results, giving rise to musical noise. In an embodiment of the present invention, by computing weighting coefficients which are in a complex conjugate relation, for post-spectrum analysis output signals from microphones (), a beam former unit () of a sound source separator device () thus carries out a beam former process for attenuating each sound source signal that comes from a region wherein the general direction of a target sound source is included and a region opposite to said region, in a plane that intersects a line segment that joins the two microphones (). A weighting coefficient computation unit () computes a weighting coefficient on the basis of the difference between power spectrum information calculated by power calculation units (). 1. A sound source separation device that separates , from mixed sounds containing mixed sound source signals output by a plurality of sound sources , a sound source signal from a target sound source , the sound source separation device comprising:a first beamformer processing unit that performs, in a frequency domain using respective first coefficients different from each other, a product-sum operation on respective output signals by a microphone pair comprising two microphones into which the mixed sounds are input to attenuate a sound source signal arrived from a region opposite to a region including a direction of the target sound source with a plane intersecting with a line interconnecting the two microphones being as a boundary;a second beamformer processing unit which multiplies respective output signals by the microphone pair by a second coefficient in a relationship of complex conjugate with the first coefficients ...

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Номер записи: 44
20-06-2013 дата публикации

TRAINING AN ECHO CANCELLER IN SEVERE NOISE

Номер: US20130156210A1
Автор: Shaw David G.
Принадлежит: LSI Corporation

An apparatus includes a non-adaptive filter, an adaptive filter, and a controller. The non-adaptive filter may have non-adaptive filter coefficients and be configured to develop a non-adaptive error signal as a function of the non-adaptive filter coefficients. The adaptive filter may have adaptive filter coefficients and be configured to develop an adaptive error signal as a function of the adaptive filter coefficients. The controller may be configured to monitor a quality of the non-adaptive and adaptive error signals and perform one or more of a full coefficient update, a partial coefficient update and a fractional coefficient update of the non-adaptive filter coefficients based on a comparison of the quality of the adaptive error signal to a determined current best-attained performance measurement. 1. An apparatus comprising:a non-adaptive filter, said non-adaptive filter having non-adaptive filter coefficients and configured to develop a non-adaptive error signal as a function of said non-adaptive filter coefficients;an adaptive filter, said adaptive filter having adaptive filter coefficients and configured to develop an adaptive error signal as a function of said adaptive filter coefficients; anda controller configured to monitor a quality of said non-adaptive and adaptive error signals and to perform one or more of a full coefficient update, a partial coefficient update, and a fractional coefficient update of said non-adaptive filter coefficients based on a comparison of said quality of said adaptive error signal to a determined current best-attained performance measure.2. The system according to claim 1 , wherein said controller is further configured to update said non-adaptive filter coefficients only when said quality of said adaptive error signal exceeds said determined current best-attained performance measure.3. The system according to claim 1 , wherein said controller is further configured to update said determined current best-attained performance ...

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Номер записи: 45
20-06-2013 дата публикации

Method and arrangement for noise reduction

Номер: US20130156212A1
Автор: Adis Bjelosevic, Peter Isberg, Thomas Karlsson
Принадлежит: SONY MOBILE COMMUNICATIONS AB

An object of the present invention is to improve the functionality of a noise reducer adapted to perform an active noise reduction process. The object is achieved by a noise reducer 300 comprising at least one microphone 310 connected to a noise controller 320, and at least one loudspeaker 330 connected to the noise controller 320. The microphone 310 is arranged at the loudspeaker 330, and the noise controller 320 is adapted to perform an active noise reduction process. An event detector 340 is connected to the noise controller 320 and adapted to send an event 10 detection signal to the noise controller 320, wherein the event detection signal comprises information regarding an external event. The noise controller 320 is further adapted to analyse the event detection signal and to adapted to control the active noise reduction process in dependence of an outcome of the analysis of the event detection signal.

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Номер записи: 46
20-06-2013 дата публикации

ADAPTIVE CROSSTALK REJECTION

Номер: US20130156238A1
Автор: Birch Magnus, Ullen Kaj
Принадлежит: SONY MOBILE COMMUNICATIONS AB

Embodiments of the invention are directed to systems, methods and computer program products for reducing crosstalk between two systems or between parts of the same system. In some embodiments, a method includes transmitting, from a first signal source, a first input signal to a first amplifier associated with a first audio-listening channel. Additionally, the method includes measuring a signal level along a common path shared by the first audio-listening channel and the second audio-listening channel, wherein the common path includes at least some resistance. Additionally, the method includes determining a compensation signal to be injected into the second audio-listening channel based at least partially on the measured signal level. Additionally, the method includes injecting at least a part of the first input signal into the second audio-listening channel based at least partially on the determined compensation signal, thereby reducing a current level in the second audio-listening channel. 1. A method for reducing crosstalk in an audio-listening channel , the method comprising:detecting a first audio-listening channel and a second audio-listening channel;transmitting from a first signal source a first input signal to a first amplifier associated with the first audio-listening channel;measuring a signal level along at least a partial portion of the common path shared by the first audio-listening channel and the second audio-listening channel, wherein the common path includes at least some resistance;determining a compensation signal to be injected into the second audio-listening channel based at least partially on the measured signal level; andinjecting at least a part of the first input signal into the second audio-listening channel based at least partially on the determined compensation signal, thereby reducing a current level in the second audio-listening channel.2. The method of claim 1 , further comprising:transmitting from a second signal source a second input ...

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Номер записи: 47
20-06-2013 дата публикации

SOUND ENCLOSURE FOR ENCLOSING A COMPRESSOR ASSEMBLY

Номер: US20130156614A1
Автор: Bonifas Mark A.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A sound enclosure for enclosing a compressor assembly in an assembled state can include at least one cover piece, a shoe member, and a base. The shoe member can include a partial circumferential wall that projects upright from a generally planar portion. One of the partial circumferential wall or the cover piece has a projected portion. The other of the partial circumferential wall or the cover piece has a recessed portion. In the assembled state, the projected portion nests into the recessed portion. The base includes an outer contact area. The shoe member includes an outer perimeter. In the assembled state, the outer contact area is in contact with the outer perimeter of the shoe member. 1. A sound enclosure for enclosing a compressor assembly in an assembled state , the sound enclosure comprising:at least one cover piece;a shoe member including a partial circumferential wall projecting upright from a generally planar portion, wherein one of the partial circumferential wall or the cover piece has a projected portion and the other of the partial circumferential wall or the cover piece has a recessed portion, whereby in an assembled state the projected portion nests into the recessed portion; anda base including an outer contact area wherein the shoe member includes an outer perimeter, whereby in the assembled state the outer contact area is in contact with the outer perimeter of the shoe member.2. The sound enclosure of wherein the shoe member includes first and second shoe members each having a joint area wherein one of the joint area of the first shoe member or the joint area of the second shoe member has an extending portion and the other of the joint area of the first shoe member or the joint area of the second shoe member has a depressed portion claim 1 , whereby in the assembled state the extending portion nests into the depressed portion.3. The sound enclosure of wherein the first shoe member includes a first partial circumferential wall projecting upright ...

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Номер записи: 48
27-06-2013 дата публикации

Sound Absorbent Barrier

Номер: US20130161126A1
Автор: Andrew Murphy, Peter Wilson
Принадлежит: Echo Barrier Ltd

A sound absorbent barrier has a sound absorbent layer disposed between a porous first cover and a second cover. The barrier also has a waterproof sound-permeable membrane between the first cover and the sound absorbent layer. The sound absorbent layer is thus protected from damage by the first and second covers and water ingress is prevented by the sound permeable membrane. The second cover may be non-porous to reflect sound waves which have passed through the sound absorbent layer back through the sound absorbent layer. Alternatively, the second cover may be porous to enable absorption of sound from two directions.

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Номер записи: 49
27-06-2013 дата публикации

COMMUNICATION METHOD, COMMUNICATION SYSTEM, AND MAGNETIC RESONANCE APPARATUS

Номер: US20130163771A1
Автор: Asaba Yusuke, Innami Yasuyuki, Kimoto Shohei, Mizobe Yuya, Murakami Kiyoshi
Принадлежит: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC

A communication method is provided. The communication method includes generating a pseudo background sound signal based on a gradient pulse control signal, performing a computation of subtracting the pseudo background sound signal from an acoustic signal having a sound signal and a background sound signal including a gradient coil drive sound signal, the acoustic signal obtained by an input device configured to receive the voice of a subject, and outputting sound based on a result of the computation, wherein a parameter of generating the pseudo background sound signal is controlled to reduce the difference resulting from the subtraction. 1. A communication method comprising:generating a pseudo background sound signal based on a gradient pulse control signal;performing a computation of subtracting the pseudo background sound signal from an acoustic signal having a sound signal and a background sound signal including a gradient coil drive sound signal, the acoustic signal obtained by an input device configured to receive a voice of a subject; andoutputting sound based on a result of the computation, wherein a parameter of generating the pseudo background sound signal is controlled to reduce the difference resulting from the subtraction.2. A communication system comprising:an input device configured to receive a voice of a subject;a generation device configured to generate a pseudo background sound signal based on a gradient pulse control signal;a computation device configured to perform a computation of subtracting the pseudo background sound signal from an acoustic signal having a sound signal and a background sound signal including a gradient coil drive sound signal, the acoustic signal obtained by the input device;a control devices configured to control a parameter for generating the pseudo background sound signal in the generation device to reduce a difference resulting from the subtraction; andan output device configured to output sound based on a result of the ...

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Номер записи: 50
27-06-2013 дата публикации

Communications Headset Speech-Based Gain Control

Номер: US20130163775A1
Автор: Paul G. Yamkovoy
Принадлежит: Bose Corp

A gain of a signal representing sounds detected by a talk-through and/or feedforward ANR microphone of a talk-through function provided by a communications headset is reduced in response to a user of the communications headset speaking.

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Номер записи: 51
27-06-2013 дата публикации

SOUND OUTPUT DEVICE

Номер: US20130163777A1
Автор: Ito Takayuki, Tashiro Shigeru, UMEMOTO Hiroaki
Принадлежит:

A sound output device for masking an operation sound generated by equipment, having: a sound reproducing unit that starts reproducing a masking sound before the operation sound is generated; and a sound output unit that outputs the masking sound reproduced by the sound reproducing unit. 1. A sound output device for masking an operation sound generated by equipment , comprising:a sound reproducing unit that starts reproducing a masking sound before the operation sound is generated; anda sound output unit that outputs the masking sound reproduced by the sound reproducing unit.2. The sound output device according to claim 1 , wherein after output of the masking sound starts claim 1 , the sound reproducing unit gradually raises an output sound pressure level of the masking sound.3. The sound output device according to claim 1 , wherein claim 1 ,the masking sound is pre-created so as to mask an operation sound generated during a predetermined action of the equipment, andthe sound reproducing unit controls the timing of starting output of the masking sound and the degree of change in output volume of the masking sound, on the basis of a period of time from the equipment starting operation until the predetermined action is performed.4. The sound output device according to claim 1 , wherein claim 1 ,the masking sound is pre-created so as to mask an operation sound generated during a predetermined action of the equipment, andthe equipment performs the predetermined action after a lapse of a predetermined period of time once output of the masking sound starts.5. The sound output device according to claim 1 , wherein claim 1 ,the masking sound is pre-created so as to mask an operation sound generated during a predetermined action of the equipment,the sound reproducing unit constantly reproduces the masking sound at a relatively low sound pressure level, andwhen the equipment starts operating, the sound reproducing unit reproduces the masking sound with the sound pressure level ...

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Номер записи: 52
27-06-2013 дата публикации

Sound output device

Номер: US20130163778A1
Автор: Hiroaki Umemoto, Shigeru Tashiro, Takayuki Ito
Принадлежит: KONICA MINOLTA INC

A sound output device for masking an operation sound generated by equipment, having: a BGM output unit that outputs a BGM; and a masking sound output unit that outputs a masking sound after the BGM output unit outputs the BGM.

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Номер записи: 53
27-06-2013 дата публикации

SOUND OUTPUT DEVICE

Номер: US20130163779A1
Автор: Ito Takayuki, UMEMOTO Hiroaki, Yamaguchi Masahiro
Принадлежит:

A sound output device for masking an operation sound generated by equipment, having: an operation determining unit that determines an operation mode to be executed by the equipment; and a sound output unit that outputs a masking sound on the basis of the operation mode determined by the operation determining unit, the masking sound changing at least in sound pressure level over time. 1. A sound output device for masking an operation sound generated by equipment , comprising:an operation determining unit that determines an operation mode to be executed by the equipment; anda sound output unit that outputs a masking sound on the basis of the operation mode determined by the operation determining unit, the masking sound changing at least in sound pressure level over time.2. The sound output device according to claim 1 , wherein the sound output unit outputs a masking sound that also changes in frequency over time.3. The sound output device according to claim 1 , wherein claim 1 ,when the equipment is operable in a plurality of operation modes, the operation determining unit further determines an operation mode to be executed by the equipment, from among the operation modes, andthe sound output unit outputs masking sounds for their respective operation modes determined by the operation determining unit, the masking sounds change differently in sound pressure level over time.4. The sound output device according to claim 1 , wherein the operation determining unit determines the operation mode to be executed by the equipment claim 1 , on the basis of a user operation or a status of the equipment.5. The sound output device according to claim 1 , further comprising:a memory unit that has stored therein a masking sound corresponding to an operation mode executable by the equipment, the masking sound changing at least in sound pressure level over time; anda sound reproducing unit that reads the masking sound corresponding to the operation mode determined by the operation ...

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Номер записи: 54
11-07-2013 дата публикации

NOISE REDUCTION USING A SPEAKER AS A MICROPHONE

Номер: US20130177163A1
Автор: HSIAO Ming-Jun
Принадлежит: RICHTEK TECHNOLOGY CORPORATION

During sound recording by a microphone, a recording device and method locate characteristics of noise by using a speaker as a second microphone to simultaneously receive sound, and then use the characteristics of noise for noise reduction of the received sound by the microphone, thereby improving the quality of sound recording. By using the speaker as a microphone to establish a microphone array with the existing microphone for noise reduction, no costs of additional microphones is required. 1. A low noise recording device , comprising:a microphone and a speaker configured to simultaneously receive sound during sound recording to generate a first analog signal and a second analog signal, respectively;a first analog processor connected to the microphone, configured to process the first analog signal to generate a third analog signal;a first analog-to-digital converter connected to the first analog processor, configured to convert the third analog signal into a first digital signal;a second analog processor connected to the speaker, configured to process the second analog signal to generate a fourth analog signal;a second analog-to-digital converter connected to the second analog processor, configured to convert the fourth analog signal into a second digital signal;a noise detector connected to the first analog-to-digital converter and the second analog-to-digital converter, configured to use the first digital signal and the second digital signal to locate characteristics of noise;a noise processor connected to the first analog-to-digital converter and the noise detector, configured to use the characteristics of noise for noise reduction of the first digital signal to generate a third digital signal; anda recording medium connected to the noise processor, configured to store the third digital signal.2. The low noise recording device of claim 1 , wherein the noise detector comprises:an equalizer connected to the second analog-to-digital converter, configured to adjust ...

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Номер записи: 55
11-07-2013 дата публикации

Apparatus

Номер: US20130177168A1
Автор: Kai Inha, Peter Sladen
Принадлежит: Nokia Oyj

An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform determining a change in position and/or orientation of an apparatus, and processing at least two audio signals dependent on the change in position and/or orientation to generate at least one output signal wherein the processing of the two audio signals dependent on the change in position and/or orientation produces the output signal comprising a representation of acoustic energy from a first direction.

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Номер записи: 56
18-07-2013 дата публикации

SOUND PROCESSING APPARATUS AND SOUND PROCESSING METHOD

Номер: US20130182866A1
Автор: ISHIBASHI Toshiaki, Kobayashi Eiko
Принадлежит: YAMAHA CORPORATION

A sound processing apparatus includes an inputting section that inputs a sound signal, an analyzing section that analyzes the input sound signal, a storing section that stores a general-purpose masking sound, a masking sound producing section that, based on a result of the analysis by the analyzing section, processes the general-purpose masking sound stored in the storing section to produce an output masking sound, and an outputting section that outputs the output masking sound. 1. A sound processing apparatus comprising:an inputting section that inputs a sound signal;an analyzing section that analyzes the input sound signal;a storing section that stores a general-purpose masking sound;a masking sound producing section that, based on a result of the analysis by the analyzing section, processes the general-purpose masking sound stored in the storing section to produce an output masking sound; andan outputting section that outputs the output masking sound.2. The sound processing apparatus according to claim 1 , wherein the analyzing section extracts a sound feature amount of the input sound signal; andwherein the masking sound producing section processes the general-purpose masking sound stored in the storing section, based on the sound feature amount, to produce the output masking sound.3. The sound processing apparatus according to claim 1 , further comprising:an eliminating section that eliminates the output masking sound from the input sound signal.4. The sound processing apparatus according to claim 1 , further comprising:an analysis result storing section which stores the analysis result for a predetermined time period,wherein the masking sound producing section compares the result of the analysis by the analyzing section with the analysis result stored in the analysis result storing section, and if a different analysis result is calculated therebetween, stops the production of the output masking sound which is based on the result of the analysis by the ...

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Номер записи: 57
18-07-2013 дата публикации

METHOD AND APPARATUS FOR MASKING SPEECH IN A PRIVATE ENVIRONMENT

Номер: US20130185061A1
Автор: ARVANAGHI Babak, FECHTER Joel
Принадлежит: MEDICAL PRIVACY SOLUTIONS, LLC

A speech masking apparatus includes a microphone and a speaker. The microphone can detect a human voice. The speaker can output a masking language which can include phonemes resembling human speech. At least one component of the masking language can have a pitch, a volume, a theme, and/or a phonetic content substantially matching a pitch, a volume, a theme, and/or a phonetic content of the voice. 1. An apparatus , comprising:a microphone configured to detect a voice of a human;a speaker configured to output a masking language, the masking language including phonemes resembling human speech, the phonemes having at least one of a pitch, a volume, a theme, or a phonetic content substantially matching the pitch, the volume, the theme or the phonetic content of the voice;a soundboard located between the microphone and the speaker, the sound board configured to at least partially acoustically isolate the output of the speaker from the microphone.2. The apparatus of claim 1 , wherein the phonemes form intelligible human words.3. The apparatus of claim 1 , wherein the human is a first human claim 1 , the microphone is configured to detect a voice of a second human claim 1 , a first component of the masking language including the phonemes claim 1 , a second component of the masking language having at least one of a pitch claim 1 , a volume claim 1 , a theme claim 1 , or a phonetic content substantially matching a pitch claim 1 , a volume claim 1 , a theme or a phonetic content of the voice of the second human.4. The apparatus of claim 1 , wherein a surface of the soundboard has a concave shape.5. The apparatus of claim 1 , further comprising:a memory storing a plurality of recordings of intelligible human speech; anda processor configured to select a recording from the plurality of recordings such that the theme of the selected recording substantially matches the theme of the voice.6. The apparatus of claim 1 , wherein the phonemes are a first component of the masking ...

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Номер записи: 58
25-07-2013 дата публикации

Acoustically Tunable Sound Absorption Articles and Methods of Making Same

Номер: US20130186706A1
Автор: Bliton Richard James, Buechler Troy Raymond, Gillette Samuel Mark
Принадлежит: Precision Fabrics Group, Inc.

A moldable acoustic facing comprises cellulosic fibers and synthetic fibers entangled together. The acoustic facing has a basis weight of from about 1.5 to about 5.0 ounces per square yard (osy), a thickness of less than about 0.050″, a mean pore size of between about 8 microns and about 40 microns, and an elongation at break of at least twenty percent. The acoustic facing includes less than about five percent synthetic microfiber and has an acoustic resistance of at least about 250 Rayls. 136-. (canceled)37. A sound absorption facing that comprises less than about five percent (5%) synthetic microfiber and has a basis weight of from about 1.5 to about 5.0 ounces per square yard (osy) , a thickness of less than about 0.050″ as measured via ASTM D1777 , a mean pore size of between about 8 microns and about 40 microns and an acoustic resistance of at least about 250 Rayls.38. The sound absorption facing of claim 37 , wherein the facing comprises cellulosic fibers.39. The sound absorption facing of claim 38 , wherein the cellulosic fibers comprise one or more fibers selected from the group consisting of wood claim 38 , cotton claim 38 , rayon and lyocell.40. The sound absorption facing of claim 38 , wherein the cellulosic fibers comprise between about 20 to about 100 percent by weight of the sound absorption facing.41. The sound absorption facing of claim 37 , wherein the facing comprises synthetic fibers.42. The sound absorption facing of claim 41 , wherein the synthetic fibers comprise one or more fibers selected from the group consisting of polypropylene claim 41 , polyethylene claim 41 , polyethylene terephthalate claim 41 , polyester claim 41 , acetate claim 41 , nylon claim 41 , polylactic acid claim 41 , glass and acrylic fibers.43. The sound absorption facing of claim 41 , wherein synthetic fibers comprise between about 0 to about 80 percent by weight of the sound absorption facing.44. The sound absorption facing of claim 37 , wherein the facing comprises a ...

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Номер записи: 59
25-07-2013 дата публикации

NOISE REDUCTION APPARATUS

Номер: US20130188800A1
Автор: ASAO Yoshifumi, Maeda Tsuyoshi
Принадлежит: Panasonic Corporation

A noise reduction apparatus includes a noise reduction amount calculator. The noise reduction amount calculator includes a difference calculator that obtains a difference between a level of the noise detected by a first noise detecting microphone and a level of the noise detected by a second noise detecting microphone when control sound is not output, a storage unit that stores the difference, an estimated noise value calculator that estimates a noise level that is to be detected by the second noise detecting microphone when the control sound is output, based on the level of the noise detected by the first noise detecting microphone when the control sound is output and the difference, and a reduction amount calculator that calculates a noise reduction amount on the noise reduction target position, based on the estimated noise value and the level of the noise detected by the second noise detecting microphone when the control sound is output. 1. A noise reduction apparatus , comprising:a first noise detecting microphone operable to detect a noise on a position different from a noise reduction target position;a second noise detecting microphone operable to detect a noise on the noise reduction target position;a control sound output unit operable to generate a control sound for reducing the noise on the noise reduction target position based on an output from the first noise detecting microphone and an output from the second noise detecting microphone to output the control sound; anda noise reduction amount calculator operable to calculate a reduction amount of the noise on the noise reduction target position based on the output from the first noise detecting microphone and the output from the second noise detecting microphone, wherein a difference calculator operable to obtain a difference between a level of the noise detected by the first noise detecting microphone and a level of the noise detected by the second noise detecting microphone in a state where the control ...

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Номер записи: 60
08-08-2013 дата публикации

Method for protecting data content

Номер: US20130205411A1
Автор: Gabriel Gudenus, Gerald Schreiber
Принадлежит: Individual

A method is provided for protecting data content against illegal copying. The data content is provided by an entertainment system and is output to output units in an authorized playback environment for playing back the data content. The method includes transmitting the data content in the authorized playback environment from the entertainment system to an output unit, and adding an interference signal to the data content such that, during playback of the data content outside the authorized playback environment a disruption is induced.

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Номер записи: 61
15-08-2013 дата публикации

Active Noise Control Arrangement, Active Noise Control Headphone and Calibration Method

Номер: US20130208908A1
Автор: Simmarano Roberto, Theiler Helmut
Принадлежит: Austriamicrsystems AG

An active noise control arrangement has a signal input (SI), a microphone input (MI), a signal output (SO) and a digital interface (DI). A signal processing block (SP) coupled to the microphone input (MI) by means of an amplifier (MA) has a digitally adjustable gain and comprises combining means (CM) and a filter (TP). The signal processing block (SP) is configured to generate an output signal at the signal output (SO) as a function of an input signal at the signal input (SI) and an amplified microphone signal. A control block (CB) is coupled to the digital interface (DI) and configured to adjust the gain of the amplifier (MA). 2. The active noise control arrangement according to claim 1 , wherein the amplifier comprises a digitally controllable resistor for adjusting the gain.3. The active noise control arrangement according to claim 2 , wherein the controllable resistor comprises a switchable resistor network.4. The active noise control arrangement according to claim 1 , wherein the digital interface and the signal input are connected to a common connection.5. The active noise control arrangement according to claim 1 , wherein the filter has a transfer function which is digitally adjustable by the control block.6. The active noise control arrangement according to claim 1 , wherein the control block comprises the memory unit configured to store a digital adjustment value claim 1 , wherein claim 1 , in a calibration mode of operation claim 1 , the control block is configured to write the digital adjustment value to the memory unit claim 1 , and claim 1 , in a normal mode of operation claim 1 , the control block is configured to read the digital adjustment value from the memory unit.7. The active noise control arrangement according to claim 6 , wherein the memory unit comprises a plurality of programmable fuses for storing the digital adjustment value.8. The active noise control arrangement according to claim 6 , wherein the control block is configured to detect an ...

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Номер записи: 62
15-08-2013 дата публикации

DYNAMIC HEARING PROTECTION METHOD AND DEVICE

Номер: US20130208909A1
Автор: Mülder Hans
Принадлежит: PHONAK AG

A dynamic hearing protection method and device with which a hearing protection device specific differential head related transfer function corresponding to the difference between an open ear resonance measurement of the user's ear canal or an ear canal approximating the user's ear canal without the hearing protection device being worn in the ear canal and an open ear resonance measurement with the hearing protection device being worn in the ear canal as a function of the angle of sound incidence is determined and when using the hearing protection device, a frequency-dependent gain function to the captured audio signals selected according to the presently determined angle of sound incidence with each of the gain functions is determined by inverting the previously determined HPD specific differential HRTF for the respective sound incidence angle, to compensate for the effect of the presence of the hearing protection device on the open ear resonance. 112-. (canceled)13. A method of providing dynamic hearing protection to a user , comprising:measuring an open ear resonance of an ear canal of the user or an ear canal approximating the user' ear canal, without a hearing protection device being worn in the ear canal, as a function of an angle of sound incidence;measuring an open ear resonance of the ear canal of the user or an ear canal approximating the user' ear canal, with a hearing protection device being worn in the ear canal, as a function of an angle of sound incidence;forming a difference between a measurement without the hearing protection device being worn in the ear canal and a measurement with the hearing protection device being worn in the ear canal in order to determine a hearing protection device specific differential head related transfer function;inserting the hearing protection device into the user's ear canal;capturing audio signals from ambient sound emitted by a sound source by a microphone arrangement of the hearing protection device;determining an ...

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Номер записи: 63
29-08-2013 дата публикации

Splicing of curved acoustic honeycomb

Номер: US20130220731A1
Автор: Burchett Rickey L., Earl Ayle
Принадлежит: Hexcel Corp

Honeycomb sections are bonded together with seams made up of an adhesive that is carried by a honeycomb seam support or a linked-segment seam support. The seams are particularly useful for splicing together curved honeycomb sections that contain acoustic septum. The curved acoustic honeycomb sections are spliced or seamed together to form engine nacelles and other acoustic dampening structures.

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Номер записи: 64
29-08-2013 дата публикации

SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND SIGNAL PROCESSING PROGRAM

Номер: US20130223639A1
Автор: Sugiyama Akihiko
Принадлежит: NEC Corporation

The present invention compensates output variability caused by the difference in the performance of and the individual difference between converter devices when processing the signals inputted by means of a converter device, and performs highly-accurate signal processing. 112-. (canceled)13. A signal processing device comprising: an input unit which inputs an input signal through a converter device;a memory unit which stores a minimum value of a reference signal inputted through a reference converter device;a comparison unit which compares a minimum value of the input signal and the minimum value of the reference signal; anda modification unit which modifies the input signal in accordance with the comparison result of the comparison unit.14. The signal processing device according to claim 13 , wherein the comparison unit calculates a ratio of the minimum value of the input signal to the minimum value of the reference signal claim 13 , and the modification unit performs gain control over the input signal in accordance with the ratio which the comparison unit calculated.15. The signal processing device according to claim 13 , wherein the modification unit determines a modification factor so that the minimum value of the input signal and the minimum value of the reference signal become identical claim 13 , and modifies an output of the converter device using the modification factor.16. The signal processing device according to wherein the modification unit comprises a noise suppression unit which suppresses noise in a noisy signal using noise information and a noise information adjustment device which adjusts the noise information and supplies it to the noise suppression unit in accordance with the comparison result of the comparison unit.17. The signal processing device according to claim 16 , wherein the noise information adjustment device further adjusts the noise information based on a suppression result of noise in the noisy signal.18. The signal processing device ...

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Номер записи: 65
05-09-2013 дата публикации

AUDIO PROCESSING APPARATUS

Номер: US20130230189A1
Автор: Kimura Masafumi
Принадлежит: CANON KABUSHIKI KAISHA

An audio processing apparatus includes an acquisition unit configured to acquire an audio signal, and an audio processing unit configured to reduce noise contained in the audio signal, wherein the audio processing unit complements an audio signal in a section containing noise of the audio signal with a signal generated based on an audio signal in a predetermined section before the section containing noise and an audio signal in a predetermined section after the section containing noise, and wherein, in a case where noise is contained in one of the audio signal in the predetermined section before the section containing noise and the audio signal in the predetermined section after the section containing noise, the audio processing unit complements the audio signal in the section containing noise with a signal generated based on the audio signal in a noise-free section. 1. An audio processing apparatus comprising:an acquisition unit configured to acquire an audio signal; andan audio processing unit configured to reduce noise contained in the audio signal,wherein the audio processing unit complements an audio signal in a section containing noise of the audio signal with a signal generated based on an audio signal in a first predetermined section before the section containing noise and/or an audio signal in a second predetermined section after the section containing noise, andwherein, in a case where noise is contained in the audio signal in the first predetermined section or the audio signal in the second predetermined section, the audio processing unit complements the audio signal in the section containing noise with a signal generated based on an audio signal in a noise-free section.2. The audio processing apparatus according to claim 1 , wherein claim 1 , in a case where noise is contained in the audio signal in the predetermined section before a first section containing noise or the audio signal in the predetermined section claim 1 , after reducing the noise ...

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Номер записи: 66
05-09-2013 дата публикации

IMAGING APPARATUS AND SOUND PROCESSING APPARATUS

Номер: US20130230307A1
Автор: Kimura Masafumi
Принадлежит: CANON KABUSHIKI KAISHA

A control unit controls a driving unit to drive an optical system in a first driving mode and controls a sound processing unit to process a sound signal in a first noise reduction processing mode in the case where a level of the sound signal obtained by a sound obtaining unit is lower than a predetermined level. The control unit controls the driving unit to drive the optical system in a second driving mode with a longer driving time than the first driving mode and controls the sound processing unit not to process the sound signal in the first noise reduction processing mode in the case where the level of the sound signal obtained by the sound obtaining unit is equal to or higher than the predetermined level. 1. An imaging apparatus , comprising:an imaging unit;a driving unit configured to drive an optical system for the imaging unit;a sound obtaining unit configured to obtain a sound signal;a sound processing unit configured to process the sound signal obtained by the sound obtaining unit; anda control unit configured to control the driving unit and the sound processing unit,wherein the control unit controls the driving unit to drive the optical system in a first driving mode and controls the sound processing unit to process the sound signal in a first noise reduction processing mode, in a case where a level of the sound signal obtained by the sound obtaining unit is lower than a predetermined level, andthe control unit controls the driving unit to drive the optical system in a second driving mode with a longer driving time than the first driving mode and controls the sound processing unit not to process the sound signal in the first noise reduction processing mode, in a case where the level of the sound signal obtained by the sound obtaining unit is equal to or higher than the predetermined level.2. The imaging apparatus according to claim 1 ,wherein the control unit reduces noise in a sound signal in a period including a driving sound of the optical system, in the ...

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Номер записи: 67
12-09-2013 дата публикации

Light efficient acoustically transmissive front projection screens

Номер: US20130233641A1
Автор: Coleman David A., Sharp Gary D.
Принадлежит: ReaID Inc.

A front projection screen is provided having a first portion of material and a second portion of material. The first and second portions of material may have an undercut edge profile, and the first and second portions of material may be perforated, such that the perforations allow the first and second portions of material to be at least somewhat acoustically transmissive while substantially maintaining optical efficiency from the front side of the front projection screen. Such optical efficiency has particular utility in stereoscopic projection applications utilizing polarized encoded light. 1. A front projection screen , comprising:a first portion of material and a second portion of material, wherein the first and second portions of material have microperforations less than approximately 300 microns, wherein the microperforations allow the first and second portions of material to maintain an approximate predetermined acoustical transmission range.2. The front projection screen of claim 1 , wherein the first and second portions of material further comprise an approximate predetermined optical fill factor.3. The front projection screen of claim 2 , wherein the predetermined optical fill factor further comprises a perforation area with an approximate area range of 1%-3% of the optical surface of the total area of the first and second portions of material.4. The front projection screen of claim 1 , wherein at least some of the microperforations further comprise an approximately conical shaped cross section.5. The front projection screen of claim 1 , wherein the perforated first and second portions of material have a substantially homogeneous appearance.6. The front projection screen of claim 1 , wherein each of the first and second portions of material have a front side and each of the first and second portions of the material have an undercut edge profile with respect to the front side of the material.7. The front projection screen of claim 6 , wherein the undercut ...

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Номер записи: 68
19-09-2013 дата публикации

Structure that can channel an elastic wave propagating in a plate

Номер: US20130241123A1
Автор: Alexander Movchan, Mohamed Farhat, Sebastien Guenneau, Stephane Enoch
Принадлежит: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS, Universite Paul Cezanne Aix Marseille III, University of Liverpool

A structure for bending transversal elastic waves around a zone to isolate of a plate, has an anisotropic Young's modulus and/or a heterogeneous mass density. The wavelengths of the elastic waves to bend are large with respect to the thickness of the plate and small with respect to the other dimensions of the plate. The structure is made by defining a meshing of a peripheral zone surrounding the zone to isolate; dividing the peripheral zone into several elementary rings and several elementary angular sectors; and forming, in each mesh delimited by an elementary angular sector and an elementary ring, a structural element in a material having a Young's modulus and/or a mass density different than those of the material forming the plate, the dimensions of the meshes and of the structural elements in the plane of the plate being less than half the wavelengths of the elastic waves to bend.

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Номер записи: 69
19-09-2013 дата публикации

ACTIVE NOISE CANCELLATION SYSTEM

Номер: US20130243214A1
Автор: Penketh Julian, Rashid Abid
Принадлежит: Wolfson Microelectronics plc

A noise cancellation system generates a noise cancellation signal from a signal representing ambient noise by signal processing. The signal processing applies a controllable gain value, and includes a high pass filter with a controllable cut-off frequency. A control block detects a wind amplitude. The cut-off frequency of the high pass filter is controlled based on the detected wind amplitude. A low pass function is applied to the detected wind amplitude, and the controllable gain is adjusted based on the output of the low pass function. 1. A method of controlling a noise cancellation system , wherein the noise cancellation system comprises:an input, for receiving a signal representing ambient noise; anda signal processing block, for generating a noise cancellation signal from the signal representing ambient noise, wherein the signal processing block includes a controllable gain value, and a high pass filter with a controllable cut-off frequency,the method comprising:detecting an amplitude of wind;controlling the cut-off frequency of the high pass filter based on the detected wind amplitude; andapplying a low pass function to the detected wind amplitude, and controlling the controllable gain value based on the output of the low pass function.2. A method as claimed in claim 1 , comprising increasing the cut-off frequency of the high-pass filter when the detected wind amplitude exceeds a first threshold.3. A method as claimed in claim 2 , comprising reducing the cut-off frequency of the high-pass filter when the detected wind amplitude is lower than the first threshold.4. A method as claimed in claim 1 , comprising:reducing the controllable gain value when the detected wind amplitude exceeds a second threshold level for a time that is greater than a first predetermined fraction of a defined time window; andincreasing the controllable gain value when the detected wind amplitude exceeds a second threshold level for a time that is lower than the first predetermined ...

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Номер записи: 70
19-09-2013 дата публикации

Networked sound masking system

Номер: US20130243215A1
Автор: Carl Derla, Klaus Moeller, Mircea Rusu, Niklas Moeller
Принадлежит: Individual

A sound masking system for shaping the ambient noise level in a physical environment. The sound masking system comprises a networked and distributed system having a number of master units coupled together and to a control unit. One or more of the master units may include satellite sound masking units which function to reproduce the sound masking signal generated by the master sound masking unit. Each of the master units is addressable over the network by the control unit enabling the control unit to program the contour, spectral band, and gain characteristics of the sound masking output signal. The system may also include a remote control unit which provides the capability to tune and adjust each master sound masking unit in situ without requiring physical access through the ceiling installation.

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Номер записи: 71
19-09-2013 дата публикации

NOISE REDUCTION APPARATUS AND AUDIO REPRODUCTION APPARATUS

Номер: US20130243225A1
Автор: Yokota Teppei
Принадлежит: SONY CORPORATION

A noise reduction apparatus includes: a speaker with a speaker unit held by holding means to make it possible to mix sounds emitted from front and rear of a vibration plate of the speaker; a microphone provided in an area where the sounds emitted from the front and rear of the vibration plate of the speaker are mixed and cancelled; and means for supplying a noise reduction audio signal obtained by phase-inverting an audio signal collected by the microphone to the speaker. 1. An audio reproduction apparatus comprising:first and second speakers for left and right channels with speaker units held by holding means to make it possible to mix sounds emitted from front and rear of vibration plates of the speakers;first and second microphones provided in areas where the sounds emitted from the front and rear of the vibration plates of the respective first and second speakers are mixed and cancelled;means for supplying noise reduction audio signals obtained by phase-inverting audio signals collected by the first and second microphones to the first and second speakers; andaudio-signal supplying means for supplying predetermined audio signals to the first and second speakers, respectively.2. An audio reproduction apparatus according to claim 1 , wherein the predetermined audio signals supplied from the audio-signal supplying means to the first and second speakers are subjected to virtual sound source processing employing a head related transfer function to cause a listener to listen to sound as if the sound is emitted from other speakers in positions different from positions of the first and second speakers.3. An audio reproduction apparatus comprising:a first speaker arranged near a listener with a speaker unit held by holding means to make it possible to mix sounds emitted from front and rear of a vibration plate of the speaker;a microphone provided in an area where the sounds emitted from the front and rear of the vibration plate of the first speaker are mixed and cancelled ...

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Номер записи: 72
26-09-2013 дата публикации

ECHO CANCELER AND ECHO DETECTOR

Номер: US20130251169A1
Автор: Awano Tomoharu, Matsuoka Bunkei, Yano Atsuyoshi
Принадлежит: Mitsubishi Electric Corporation

An echo canceler includes a signal-to-echo ratio calculating unit and a residual echo suppressing unit . The signal-to-echo ratio calculating unit computes a signal-to-echo ratio SE(n) indicating a ratio of an echo component to a received signal x(n) from a first residual signal and a second residual signal. The first residual signal is obtained using a filter coefficient sequence of an update filter , which is obtained up to the previous operation. The second residual signal is obtained using an updated filter coefficient sequence that undergoes a coefficient update which is performed, using an arbitrary update step size μ(n), on the filter coefficient sequence of the update filter , which is obtained up to the previous operation. The residual echo suppressing unit suppresses the echo component contained in the microphone input signal in accordance with the signal-to-echo ratio the signal-to-echo ratio calculating unit computes. 1. An echo canceler for removing an echo component which is obtained by picking up a received signal with a microphone and is contained in a microphone input signal , the echo canceler comprising:a signal-to-echo ratio calculating unit for computing a signal-to-echo ratio indicating a ratio of the echo component to the received signal from a first residual signal and a second residual signal, the first residual signal being obtained by using a filter coefficient sequence of an update filter which is obtained up to the previous operation of the echo canceler, and the second residual signal being obtained by using an updated filter coefficient sequence that undergoes a coefficient update which is performed, using an arbitrary update step size, on the filter coefficient sequence of the update filter which is obtained up to the previous operation of the echo canceler; andan echo suppressing unit for suppressing the echo component contained in the microphone input signal in accordance with the signal-to-echo ratio the signal-to-echo ratio ...

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Номер записи: 73
26-09-2013 дата публикации

ACTIVE NOISE CANCELLATION DECISIONS IN A PORTABLE AUDIO DEVICE

Номер: US20130252675A1
Автор: Nicholson Guy C.
Принадлежит:

Active noise cancellation (ANC) circuitry is coupled to the input of an earpiece speaker in a portable audio device, to control the ambient acoustic noise outside of the device and that may be heard by a user of the device. A microphone is to pickup sound emitted from the earpiece speaker, as well as the ambient acoustic noise. Control circuitry deactivates the ANC in response to determining that an estimate of how much sound emitted from the earpiece speaker has been corrupted by noise indicates insufficient corruption by noise. In another embodiment, the ANC decision is in response to determining that an estimate of the ambient noise level is greater than a threshold level of an audio artifact that could be induced by the ANC. Other embodiments are also described and claimed. 1. A portable audio device comprising:an earpiece speaker having an input to receive an audio signal;active noise cancellation (ANC) circuitry coupled to the input of the earpiece speaker to control ambient acoustic noise outside of the device that is heard by a user of the device; andcontrol circuitry to compute strength of an audio artifact present in sound emitted from the earpiece speaker,wherein the control circuitry is to deactivate the ANC circuitry in response to determining that the audio artifact strength is greater than an estimated level of said ambient acoustic noise.2. The portable audio device of further comprising: a first microphone to pickup (a) sound emitted from the earpiece speaker and (b) said ambient acoustic noise,', 'a first filter that models acoustic response at the output of the speaker and pick up by the first microphone, the first filter having an input coupled to receive the audio signal and an anti-noise signal produced by the ANC circuitry,', 'a second filter having a similar frequency response as the first filter, wherein the audio signal is to pass through the second filter, and', 'a differencing unit having a first input coupled to the output of the first ...

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Номер записи: 74
03-10-2013 дата публикации

AUDIO CONTROL SYSTEM

Номер: US20130259247A1
Автор: Kim Seungil
Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Technologies are generally described for a system for controlling an audio signal based on a proximity of, e.g., a user's hand to at least one component of an audio control system. In some examples, an audio control system may include a filter configured to provide an echo signal and a control decision unit configured to provide a control signal based on the echo signal. 1. An audio control system , comprising:a filter configured to receive a signal from an audio player and to filter the received signal based on a filtering coefficient to provide an echo signal; anda control decision unit configured to provide a control signal based on at least one of the echo signal and the filtering coefficient.2. The audio control system of claim 1 , further comprising:a controller configured to control at least one functional feature of the audio player according to the control signal.3. The audio control system of claim 1 , further comprising:a controller configured to control at least one functional feature of an external device according to the control signal.4. The audio control system of claim 3 , wherein the control signal is a wireless signal.5. The audio control system of claim 1 , wherein the filter is further configured to receive an echo-free signal from an echo-free signal generating unit and to update the filtering coefficient based on the echo-free signal.6. The audio control system of claim 1 , wherein a magnitude of the echo signal provided by the filter is influenced by a proximity of a hand of a user of the audio control system to a speaker that is included as part of the audio control system.7. The audio control system of claim 6 , wherein a magnitude of the echo signal provided by the filter is influenced by a proximity of the speaker to a microphone that is included as part of the audio control system.8. The audio control system of claim 6 , wherein the speaker is a headphone speaker.9. The audio control system of claim 1 , wherein the control decision unit ...

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Номер записи: 75
03-10-2013 дата публикации

ACTIVE VIBRATION NOISE CONTROL APPARATUS

Номер: US20130259249A1
Автор: INOUE Toshio, Sakamoto Kosuke
Принадлежит: HONDA MOTOR CO., LTD.

An ANC apparatus using so-called adaptive control is provided with a cancellation sound output means which outputs front wheel cancellation sound that cancels front wheel vibration noise due to front wheel vibration at a position to be silenced on the basis of a front wheel reference signal, and outputs rear wheel cancellation sound that cancels rear wheel vibration noise due to predicted rear wheel vibration at the position to be silenced on the basis of a rear wheel reference signal, and a turning state detection means which detects a turning state of a vehicle. When a difference in travel trajectory between a front wheel and a rear wheel is detected on the basis of the turning state, the cancellation sound output means suppresses the output of the rear wheel cancellation sound. 1. An active vibration noise control apparatus comprising:a font road wheel vibration detecting unit for detecting a front road wheel vibration based on a road input to a front road wheel of a vehicle and outputting a front road wheel reference signal representing the detected front road wheel vibration;a vehicle speed detecting unit for detecting a vehicle speed of the vehicle;a delay time calculating unit for determining a delay time which represents a difference between times at which the front road wheel and a rear road wheel thereof pass through one spot;a rear road wheel reference signal output unit for outputting a rear road wheel reference signal representing a predicted rear road wheel vibration which is a delayed front road wheel vibration for the delay time;a canceling sound output unit for outputting, based on the front road wheel reference signal, a front road wheel canceling sound for canceling a front road wheel vibration noise due to the front road wheel vibration at a sound silent target position, and for outputting, based on the rear road wheel reference signal, a rear road wheel canceling sound for canceling a rear road wheel vibration noise due to the predicted rear ...

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Номер записи: 76
03-10-2013 дата публикации

ACTIVE VIBRATION OR NOISE SUPPRESSION SYSTEM

Номер: US20130259252A1
Автор: Goto Katsuhiro, ICHIKAWA Hiroyuki, YASUDA Takayoshi
Принадлежит:

Provided is an active vibration or noise suppression system capable of converging vibration or noise more quickly. 1. An active vibration or noise suppression system for actively suppressing vibration or noise at an evaluation point by outputting control vibration or control sound , wherein: [{'sub': '(n)', 'a control signal generating unit for generating a sine wave control signal yconstituted by frequency of a vibration or noise source, and an amplitude filter coefficient and a phase filter coefficient as an adaptive filter coefficient;'}, {'sub': '(n)', 'a control vibration or control sound generator for outputting the control vibration or control sound corresponding to the sine wave control signal y;'}, {'sub': '(n)', 'a residual error signal detecting unit for detecting, at the evaluation point, a residual error signal egenerated by interference between vibration or noise caused by the vibration or noise source and the control vibration or control sound;'}, {'sub': (n+1)', '(n)', '(n), 'an amplitude filter coefficient updating unit for calculating an amplitude update term Δato be added to or subtracted from a last updated value of the amplitude filter coefficient afor update, so as to reduce the residual error signal e; and'}, {'sub': (n+1)', '(n)', '(n), 'a phase filter coefficient updating unit for calculating a phase update term Δφto be added to or subtracted from a last updated value of the phase filter coefficient φfor update, so as to reduce the residual error signal e,'}], 'the active vibration or noise suppression system comprises{'sub': '(n)', 'the sine wave control signal yis expressed by a sine wave having an amplitude component and a phase component,'}{'sub': (n+1)', '(n+1), 'each of the amplitude update term Δaand the phase update term Δφcontains a sine wave or cosine wave term having an amplitude component and a phase component, and'}{'sub': (n)', '(n)', '(n+1)', '(n+1)', '(n), 'the phase component of the sine wave control signal yis expressed by ...

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Номер записи: 77
03-10-2013 дата публикации

SYSTEMS, METHODS, AND APPARATUS FOR PRODUCING A DIRECTIONAL SOUND FIELD

Номер: US20130259254A1
Автор: Kim Lae-Hoon, Visser Erik, Xiang Pei
Принадлежит: QUALCOMM INCORPORATED

A system may be used to drive an array of loudspeakers to produce a sound field that includes a source component, whose energy is concentrated along a first direction relative to the array, and a masking component that is based on an estimated intensity of the source component in a second direction that is different from the first direction. 1. A method of signal processing , said method comprising:determining a frequency profile of a source signal;based on said frequency profile of the source signal, producing a masking signal according to a masking frequency profile, wherein the masking frequency profile is different than the frequency profile of the source signal; andproducing a sound field comprising (A) a source component that is based on the source signal and (B) a masking component that is based on the masking signal.2. The method according to claim 1 , wherein said determining the frequency profile of the source signal includes calculating a first level of the source signal at a first frequency and a second level of the source signal at a second frequency claim 1 , andwherein said producing the masking signal is based on said calculated first and second levels.3. The method according to claim 2 , wherein said first level is less than said second level claim 2 , and wherein a level of the masking signal at the first frequency is greater than a level of the masking signal at the second frequency.4. The method according to claim 1 , wherein said masking frequency profile comprises a masking target level for each of a plurality of different frequencies claim 1 , based on the frequency profile of the source signal claim 1 , andwherein the masking signal is based on said masking target levels.5. The method according to claim 4 , wherein at least one of said masking target levels for a frequency among said plurality of different frequencies is based on at least one of said masking target levels for another frequency among said plurality of different frequencies.6. ...

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Номер записи: 78
03-10-2013 дата публикации

HOWLING SUPPRESSION DEVICE, HEARING AID, HOWLING SUPPRESSION METHOD, AND INTEGRATED CIRCUIT

Номер: US20130259277A1
Автор: Kojima Mariko, Ura Takefumi
Принадлежит:

A howling suppression device includes: a subtractor which generates an error signal; an adaptive filter which applies filtering to the error signal; and a coefficient update control unit which controls an update rate of a filter coefficient and includes: a convergence analysis unit which determines whether or not a condition that the degree of convergence of filter characteristics is higher than a criterion value is satisfied; a change amount analysis unit which determines whether or not a condition that the degree of convergence has turned out to be higher is satisfied; and an update rate control unit which sets the update rate to a first rate when both the conditions are satisfied and to a second rate when at least one of the conditions is not satisfied. The adaptive filter updates the filter coefficient at the update rate. 1. A howling suppression device which reduces a howling component included in an input signal , the howling suppression device comprising:a subtractor which generates an error signal by subtracting, from the input signal, a pseudo feedback signal which is an estimated signal of a feedback signal that is the howling component included in the input signal;an adaptive filter which generates a pseudo feedback signal for a next input signal by applying filtering to the error signal; anda coefficient update control unit configured to control an update rate of a filter coefficient of the adaptive filter,wherein the coefficient update control unit includes:a convergence analysis unit configured to determine whether or not a first condition that a degree of convergence of filter characteristics of the adaptive filter with respect to spatial transfer characteristics is higher than a criterion value is satisfied, the filter characteristics being determined by the filter coefficient;a change amount analysis unit configured to determine whether or not a second condition that the degree of convergence of the filter characteristics with respect to the spatial ...

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Номер записи: 79
17-10-2013 дата публикации

SOUNDPROOFING PLATE WHICH DOES NOT OBSTRUCT AIRFLOW

Номер: US20130270035A1
Автор: Kitamura Yoshiharu
Принадлежит:

A soundproofing plate includes a substrate wherein through holes are formed; and sound collecting parts, including through holes in the center, which approximately match the through holes of the substrate, the collecting parts having a shape wherein the diameter increases as the distance from the substrate increases. The sound collecting parts are disposed on both faces of the substrate. Alternatively, a soundproofing plate includes a substrate with a plurality of through holes; and attenuation elements. The attenuation elements include hollow shaft members; and sound collecting parts anchored on the end parts of the hollow shaft members. The sound collecting parts include through holes in the centers which approximately match hollow parts in the hollow shaft members; and have a shape wherein the diameter increases as the distance from the hollow shaft member increases. The hollow shaft members are disposed in the substrate to approximately match the substrate through holes. 111-. (canceled)12. A soundproofing plate comprising:a substrate on which are formed a plurality of through holes; anda sound collecting portion having in the center a through hole approximately aligned with a through holes of the substrate, of a shape wherein the diameter increases as the distance from the substrate increases, provided outside the substrate.13. The soundproofing plate according to claim 12 , wherein sound collecting portions are provided on both surfaces of the substrate.14. The soundproofing plate according to claim 12 , comprising:a substrate on which are formed a plurality of through holes; andan attenuation element comprising a hollow axial member, and a sound collecting portion affixed to an end portion of the hollow axial member, having in the center a through hole approximately aligned with a hollow portion of the hollow axial member, of a shape wherein the diameter increases as the distance from the hollow axial member increases;wherein the hollow axial member is ...

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Номер записи: 80
17-10-2013 дата публикации

Sound pickup device and imaging device

Номер: US20130271647A1
Автор: Yoshio Ohtsuka
Принадлежит: Panasonic Corp

A sound pickup device includes a detector configured to detect attachment of an external apparatus, a sound pickup unit configured to pick up a sound and output a sound signal, and a noise processor configured to, in response to the detection of attachment of an external appliance, add a noise signal to the sound signal output from the sound pickup unit and output the sound signal including the noise signal added thereto.

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Номер записи: 81
17-10-2013 дата публикации

HOWLING SUPPRESSION DEVICE, HEARING AID, HOWLING SUPPRESSION METHOD, AND INTEGRATED CIRCUIT

Номер: US20130272533A1
Автор: Kojima Mariko, Ura Takefumi
Принадлежит:

A howling suppression device includes a subtractor which subtracts a pseudo feedback signal from an input signal; an adaptive filter which produces a pseudo feedback signal for a next input signal; and a coefficient update control unit which controls an update rate of a filter coefficient of the adaptive filter and includes: a level calculation unit which calculates a signal level of the input signal; a signal-rising-edge detection unit which detects a rising-edge point; a reverberation section detection unit which detects a reverberation section; and an update rate control unit which sets the update rate to a first rate in the reverberation section and to a second rate in other sections. The adaptive filter updates the filter coefficient at the update rate set by the update rate control unit. 1. A howling suppression device which reduces a howling component included in an input signal , the howling suppression device comprising:a subtractor which produces an error signal by subtracting, from the input signal, a pseudo feedback signal which is an estimated signal of a feedback signal included in the input signal as the howling component;an adaptive filter which produces a pseudo feedback signal by applying filtering to the error signal, the produced pseudo feedback signal being to be used for a next input signal; anda coefficient update control unit configured to control an update rate of a filter coefficient of the adaptive filter,wherein the coefficient update control unit includes:a level calculation unit configured to calculate a signal level of the input signal;a signal-rising-edge detection unit configured to detect a rising-edge point from which an increase amount of the signal level of the input signal per unit time exceeds a threshold value;a reverberation section detection unit configured to detect a reverberation section which starts at the rising-edge point and ends at a terminal point at which the signal level of the input signal departs from a ...

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Номер записи: 82
17-10-2013 дата публикации

MANAGING ACOUSTIC NOISE PRODUCED BY A DEVICE

Номер: US20130272534A1
Автор: Bard Benjamin A., Costa Paul J., Cox David R.
Принадлежит:

One embodiment of the present invention provides a system that manages the acoustic noise produced by a device. During operation, the system receives a set of acoustic characteristics for the device. The system then uses these acoustic characteristics to estimate the acoustic noise being generated by the device. Next, the system uses the estimated acoustic noise to adjust a setting in the device to manage the acoustic noise produced by the device. 1. A method for managing acoustic noise produced by a device , comprising:receiving a set of acoustic characteristics for the device;determining an estimated acoustic noise for the device using the set of acoustic characteristics; andadjusting a setting for a component within the device based on the estimated acoustic noise generated by the device to manage the acoustic noise that is produced by the device.220-. (canceled) 1. Field of the InventionThe present invention relates to techniques for adjusting the acoustic noise produced by an electronic device, such as a computer system.2. Related ArtElectronic devices, such as computers and mobile telephones, are increasingly being used for both business and entertainment purposes. However, as these devices are used in a wider range of environments, acoustic noise produced by these devices becomes more likely to disturb both device users as well as nearby people. For instance, acoustic noise produced by storage devices, power supplies, and/or thermal-cooling components within these electronic devices may collectively produce undesirable acoustic noise. Unfortunately, reducing such unwanted acoustic noise can be difficult and expensive, because such noise-producing components are typically essential components in such devices.Hence, what is needed is a method and an apparatus that facilitates using electronic devices without the above-described problems.One embodiment of the present invention provides a system that manages the acoustic noise produced by a device. During ...

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Номер записи: 83
24-10-2013 дата публикации

APPARATUS FOR QUIETING INFANT IN A PUBLIC AREA

Номер: US20130277141A1
Автор: Blankenship Peter, Blankenship Sam
Принадлежит:

The invention is comprised a sound deadening or sound buffering material including but not limited to, foam, plastic, or fabric that covers at least part of the child, thereby reducing both the decibel level coming from the child and the decibel level coming to the child. This creates a quieter environment for the child while serving a dual purpose to reduce any noise coming from the child. 1. A sound buffering apparatus comprising:a canopy;a sealing element;a panel anda closing mechanism wherein said canopy comprises a material capable of reducing sound from passing thererthrough in combination with an infant device.2. A sound buffering apparatus of claim 1 , wherein said panel further comprises a window.3. A sound buffering apparatus of claim 1 , wherein said canopy is supported by at least one rod.4. A sound buffering apparatus of claim 1 , wherein said closing mechanism is selected from a group consisting of a strap claim 1 , clip claim 1 , hook and loop fastener claim 1 , zipper claim 1 , button claim 1 , snap claim 1 , adhesive or any other formed shapes meant to aid and support panel.5. A sound buffering apparatus of claim 1 , wherein said infant device is selected from a group consisting of a car seat claim 1 , a vehicle seat claim 1 , a baby seats claim 1 , a glider seat claim 1 , a crib claim 1 , a stroller and an automatic swing seat.6. A sound buffering apparatus of claim 1 , wherein said canopy comprises a material selected from a group consisting of plastic claim 1 , cotton fabric claim 1 , light-weight rubber claim 1 , olefin foam claim 1 , unwoven fabric claim 1 , a woven fabric claim 1 , neoprene and polyester.7. A method of dampening sound comprising:disposing a sound buffering apparatus on an infant device forming a cavity wherein said sound buffering apparatus comprises a canopy, a sealing element and a closing element;placing an infant in said infant device; andclosing said canopy thereby preventing a substantial portion of sound from entering ...

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Номер записи: 84
24-10-2013 дата публикации

A PID CONTROLLER

Номер: US20130279711A1
Автор: Scott Ivan A., Stothers Ian M.
Принадлежит:

An adaptive control unit is described for receiving an analog input signal containing at least an indication of a parameter to be controlled to generate an analog output signal for control of the parameter. The analog input signal contains a fed back component resulting from the analog output signal. The adaptive control unit comprises an analog filter having an adjustable gain, a gain adjuster for adjusting the gain of the analog filter using a feedforward adjustment method, and a filter for compensating for the fed back component in the analog input signal. 1. A PID controller for receiving an analog input signal containing at least an indication of a parameter in a plant to be controlled to generate an analog output signal for control of the parameter , wherein said analog input signal contains a fed back component resulting from said analog output signal , the PID controller comprising:an analog input for receiving an analog input signal and an analog output for outputting an analog output signal; a first analog filter having an adjustable gain;', 'first gain adjusting unit for adjusting the gain of said first analog filter; and', 'a first feedback filter for compensating for a fed back component in a first analog input signal;, 'a proportional unit connected between said analog input and output, said proportional unit including a first control unit for adjusting the gain of said proportional unit, the first control unit comprising a second analog filter having an adjustable gain;', 'second gain adjusting unit for adjusting the gain of said second analog filter; and', 'a second feedback filter for compensating for a fed back component in a second analog input signal;, 'an integral unit connected between said analog unout and output, said integral unit including a second control unit for adjusting the gain of said integral unit, the second control unit comprising a third analog filter having an adjustable gain;', 'third gain adjusting unit for adjusting the gain ...

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Номер записи: 85
24-10-2013 дата публикации

ACTIVE VIBRATION NOISE CONTROL DEVICE, ACTIVE VIBRATION NOISE CONTROL METHOD AND ACTIVE VIBRATION NOISE CONTROL PROGRAM

Номер: US20130279712A1
Автор: Nohara Manabu, Obata Kensaku, Ohta Yoshiki, Soga Yusuke
Принадлежит: PIONEER CORPORATION

An active vibration noise control device obtains error signals corresponding to a cancellation error between vibration noise and control sounds generated by multiple speakers, from microphone(s), and actively controls the vibration noise. A basic signal generating unit generates a basic signal based on a vibration noise frequency. An adaptive notch filter unit generates control signals provided to each of the multiple speakers by applying a filter coefficient to the basic signal. A reference signal generating unit generates a reference signal from the basic signal based on multiple transfer characteristics from the multiple speakers to the one or more microphones. A filter coefficient updating unit updates the filter coefficient used by the adaptive notch filter unit so as to minimize the error signals. A controlling unit changes amplitude of the control signals of the speakers based on a similarity between the transfer characteristics and characteristics of the vibration noise. 1. An active vibration noise control device which obtains error signals corresponding to a cancellation error between a vibration noise and control sounds generated by multiple speakers , from at least one or more microphones , and which actively controls the vibration noise , comprising:a basic signal generating unit which generates a basic signal based on a vibration noise frequency of the vibration noise;an adaptive notch filter unit which generates control signals provided to each of the multiple speakers by applying a filter coefficient to the basic signal, in order to make the multiple speakers generate the control sounds so that the vibration noise is canceled;a reference signal generating unit which generates a reference signal from the basic signal based on multiple transfer characteristics from the multiple speakers to the one or more microphones;a filter coefficient updating unit which updates the filter coefficient used by the adaptive notch filter unit based on the reference ...

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Номер записи: 86
24-10-2013 дата публикации

Mixer with adaptive post-filtering

Номер: US20130279718A1
Автор: Phillip A. Hetherington
Принадлежит: QNX Software Systems Ltd

A noise reduction system includes multiple transducers that generate time domain signals. A transforming device transforms the time domain signals into frequency domain signals. A signal mixing device mixes the frequency domain signals according to a mixing ratio. Frequency domain signals are rotated in phase to generate phase rotated signals. A post-processing device attenuates portions of the output based on coherence levels of the signals.

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Номер записи: 87
31-10-2013 дата публикации

Heat Exchanger for an Air Conditioning System

Номер: US20130283841A1
Автор: Fischer Dietmar, Markowitz Markus
Принадлежит:

An internal heat exchanger for an air conditioning system, having: a high pressure side through which a coolant under high pressure flows in operation; and a low pressure side through which coolant under low pressure flows in operation. The heat exchanger is configured in such a way that pulsations of the coolant flowing therethrough dampen noise. 1. An internal heat exchanger for an air conditioning system , comprising:a high pressure side through which a coolant under high pressure flows in operation; anda low pressure side through which coolant under low pressure flows in operation;wherein the heat exchanger is configured in such a way that pulsations of the coolant flowing therethrough dampen noise.2. The internal heat exchanger of claim 1 , wherein the heat exchanger is configured so as to damp noise at a plurality of predetermined frequencies.3. The internal heat exchanger of claim 2 , further comprising:a resonator connected to the high or low pressure side and configured to have a natural frequency corresponding to at least one of the predetermined frequencies.4. The internal heat exchanger of claim 1 , further comprising:structures on the high or low pressure side configured to change coolant flow speed or direction thereby damping noise to a predetermined frequency.5. The internal heat exchanger of claim 4 , wherein the structures are fixed walls installed in the heat exchanger configured to change a coolant flow cross-section on the high pressure or low pressure side of the heat exchanger.6. The internal heat exchanger of claim 4 , wherein the structures are at least partly formed as air-permeable partitions.7. The internal heat exchanger of claim 6 , further comprising:a resonant chamber in the high or low pressure side tuned to a pulsation frequency of coolant flowing therethrough.8. The internal heat exchanger of claim 7 , wherein the resonant chamber includes a porous claim 7 , sound absorbing material.9. The internal heat exchanger of claim 1 , ...

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Номер записи: 88
31-10-2013 дата публикации

Leakage-modeling adaptive noise canceling for earspeakers

Номер: US20130287218A1
Автор: Jeffrey Alderson, Jon D. Hendrix
Принадлежит: Cirrus Logic Inc

A personal audio device, such as a headphone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal that measures the ambient audio, and the anti-noise signal is combined with source audio to provide an output for a speaker. The anti-noise signal causes cancellation of ambient audio sounds that appear at the reference microphone. A processing circuit uses the reference microphone to generate the anti-noise signal, which can be generated by an adaptive filter. The processing circuit also models an acoustic leakage path from the transducer to the reference microphone and removes elements of the source audio appearing at the reference microphone signal due to the acoustic output of the speaker. Another adaptive filter can be used to model the acoustic leakage path.

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Номер записи: 89
31-10-2013 дата публикации

COORDINATED CONTROL OF ADAPTIVE NOISE CANCELLATION (ANC) AMONG EARSPEAKER CHANNELS

Номер: US20130287219A1
Автор: Alderson Jeffrey, Hendrix Jon D.
Принадлежит: Cirrus Logic, Inc.

A personal audio device including earspeakers, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal for each earspeaker from at least one microphone signal that measures the ambient audio, and the anti-noise signals are combined with source audio to provide outputs for the earspeakers. The anti-noise signals cause cancellation of ambient audio sounds at the respective earspeakers. A processing circuit uses the microphone signal(s) to generate the anti-noise signals, which can be generated by adaptive filters. The processing circuit controls adaptation of the adaptive filters such that when an event requiring action on the adaptation of one of the adaptive filters is detected, action is taken on the other one of the adaptive filters. Another feature of the ANC system uses microphone signals provided at both of the earspeakers to perform processing on a voice microphone signal that receives speech of the user. 1. A personal audio system , comprising:a first earspeaker for reproducing a first audio signal including both first source audio for playback to a listener and a first anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the first earspeaker;a second earspeaker for reproducing a second audio signal including both second source audio for playback to a listener and a second anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the second earspeaker;at least one microphone for providing at least one microphone signal indicative of the ambient audio sounds; anda processing circuit that generates the first anti-noise signal from the at least one microphone signal using a first adaptive filter to reduce the presence of the ambient audio sounds at the first earspeaker in conformity with the at least one microphone signal, wherein the processing circuit generates the second anti-noise signal from the at least one microphone signal using a second ...

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Номер записи: 90
07-11-2013 дата публикации

AUDIO SYSTEM

Номер: US20130293723A1
Автор: Benson Simon Mark, Bickerstaff Ian Henry
Принадлежит:

An audio system comprises a headset comprising a pair of earpieces positionable with respect to the user's ears so that, in use, the user is inhibited from hearing sounds from the user's environment, at least one of the earpieces having a transducer for reproducing sounds from an input audio signal; a microphone for generating a captured audio signal representing captured sounds from the user's environment; a detector for detecting the presence of any of a set of one or more characteristic sounds in the captured audio signal; and a controller operable to transmit sounds from the user's environment to the user in response to a detection that one or more of the set of characteristic sounds is present in the captured audio signal.

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Номер записи: 91
07-11-2013 дата публикации

Coupling an Electronic Skin Tattoo to a Mobile Communication Device

Номер: US20130294617A1
Автор: Alberth, JR. William P.
Принадлежит: MOTOROLA MOBILITY LLC

An electronic skin tattoo affixes to a body surface for providing auxiliary voice input to a mobile communication device. The tattoo includes a microphone, a transceiver for wireless communication with the mobile communication device, a power supply, and a controller coupled to the power supply, the transceiver and the microphone. The controller is operable to receive an initialization signal from the mobile communication device to initiate reception of an audio stream picked up from the microphone and transmit via the transceiver audio signals for the mobile communication device. 1. An electronic skin tattoo to affix to a body surface for providing auxiliary voice input to a mobile communication device , comprising:a microphone;a transceiver for wireless communication with the mobile communication device;a power supply; anda controller coupled to the power supply, the transceiver and the microphone, the controller operable to receive an initialization signal from the mobile communication device to initiate reception of an audio stream picked up from the microphone and transmit via the transceiver audio signals for the mobile communication device.2. The electronic skin tattoo according to claim 1 , wherein the power supply further comprises a battery.3. The electronic skin tattoo according to claim 2 , wherein the processor is responsive to initialization signal from the mobile communication device to initiate charging of the battery.4. The electronic skin tattoo according to claim 1 , wherein the transceiver is a near field communication transceiver.5. The electronic skin tattoo according to claim 4 , wherein the power supply includes circuitry responsive to the near field signals received to provide power.6. The electronic skin tattoo according to claim 1 , wherein processor is configured to provide an initialization signal as a wake-up sequence to the mobile communication device when detecting an audio stream having a predetermined pattern.7. The electronic skin ...

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Номер записи: 92
07-11-2013 дата публикации

Sheet material having a concave-convex part, and vehicle panel and laminated structure using the same

Номер: US20130295406A1
Автор: Masaya Takahashi
Принадлежит: Sumitomo Light Metal Industries Ltd

A sheet material ( 1 ) includes a stiffness-increasing concave-convex part ( 20 ). A first reference plane (K 1 ) and a second reference plane (K 2 ) serve as a reference system. Numerous at least substantially (H) shaped first reference areas ( 213 ), each including two parallel longitudinal bar parts ( 214 ) and a latitudinal bar part ( 215 ) that connects center portions the two parallel longitudinal bar parts together, are arrayed with the same orientation in the second reference plane (K 2 ). First areas ( 21 ) respectively protrude from the first reference areas ( 213 ) in the second reference plane (K 2 ) toward the first reference plane (K 1 ). Each first area ( 21 ) includes a first top surface ( 211 ), which is a reduced projection of its first reference area ( 213 ) into the first reference plane (K 1 ), and first side surfaces ( 212 ) that connect the outer periphery of the first top surface ( 211 ) with the outer periphery of the corresponding first reference area ( 213 ).

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Номер записи: 93
14-11-2013 дата публикации

Suppression device for outdoor noise in indoor space

Номер: US20130301843A1
Автор: Zhongyi Xu
Принадлежит: Individual

The suppression device for outdoor noises in indoor space solves the technical problems on realizing better sound insulation effect within the room space and creating a quiet atmosphere for people's living environment. The structure includes an anti-noise sound source synchronized to and invert with outdoor noises. The circuit structure of suppression device includes a directional reception and processing circuit for outdoor noises, a attenuation control circuit, a multi-channel digital amplifier circuit, and loudspeaker being installed at the inlet of indoor noises. The directional reception and processing circuit for outdoor noises processes the noise signals collected from the outdoor environment and generates the inverted-phase signals, and then transmits them to the input terminal of attenuation control circuit. After being processed with attenuation by attenuation control circuit, the reverse-phase signals are sent out to input terminal of multi-channel digital amplifier circuit, which then enables the loudspeaker to generate noise compensation signals inverted to outdoor noises. This invention can provide the whole system with noise suppression capability over 28 dB.

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Номер записи: 94
14-11-2013 дата публикации

EAR PLUG DEVICES, METHODS AND KITS FOR THE INDUCTION AND MAINTENANCE OF QUALITY OF SLEEP

Номер: US20130301845A1
Автор: Royal Dennis
Принадлежит:

An ear plug system according to various embodiments can include an ear plug device and an electronic control unit. The ear plug device can be configured to include a white noise component, an ear cover, acupuncture nodes and a headband. The white noise component masks select external noises. The ear cover covers a portion of the user's ear. At least one acupuncture nodules is provided in the ear cover to apply pressure, without penetrating the user's skin. The headband extends at least partially around the user's head and applies compressive force to the ear plug device and the acupuncture nodes to ensure a proper fit and comfort. The electronic control unit wirelessly or directly connects to the ear plug device for controlling the operation of the ear plug device. 1. An ear plug system , comprising: ["a sound producing mechanism configured to produce sounds and transmit the sounds within the user's ear when inserted into the user's ear;", 'a white noise generator included in the sound producing mechanism and configured to generate noise-cancellation sounds in an interior of the ear plug device to mask or cancel select external noises;', "an ear cover to cover a portion of the user's ear;", "at least one acupuncture nodule provided in the ear cover and configured to apply pressure on the user's ear, without penetrating the user's skin; and", "a headgear configured to extend at least partially around the user's head and apply a compressive force to the ear plug device and the acupuncture nodes; and"], "an ear plug device configured to be inserted into a user's ear, comprising:"}an electronic control unit connected to the ear plug device for controlling operation of the ear plug device.2. The system of further comprising a remote control device in wireless or direct communication with the electronic control unit claim 1 , wherein the remote control device is configured to enable the user to set at least one operational parameter of the electronic control unit to ...

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Номер записи: 95
14-11-2013 дата публикации

SEQUENCED ADAPTATION OF ANTI-NOISE GENERATOR RESPONSE AND SECONDARY PATH RESPONSE IN AN ADAPTIVE NOISE CANCELING SYSTEM

Номер: US20130301847A1
Автор: Alderson Jeffrey, Hendrix Jon D., Kamath Gautham Devendra, Miller Antonio John, Yong Chin, ZHOU Dayong
Принадлежит: Cirrus Logic, Inc.

A personal audio device, such as a wireless telephone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone is also provided proximate to the speaker to provide an error signal indicative of the effectiveness of the noise cancellation. A secondary path estimating adaptive filter is used to estimate the electro-acoustical path from the noise canceling circuit through the transducer so that source audio can be removed from the error signal. Adaptation of adaptive filters is sequenced so that update of their coefficients does not cause instability or error in the update. A level of the source audio with respect to the ambient audio can be determined to determine whether the system may generate erroneous anti-noise and/or become unstable. 1. A personal audio device , comprising:a personal audio device housing;a transducer mounted on the housing for reproducing an audio signal including both source audio for playback to a listener and an anti-noise signal for countering effects of ambient audio sounds in an acoustic output of the transducer;a reference microphone mounted on the housing for providing a reference microphone signal indicative of the ambient audio sounds;an error microphone mounted on the housing in proximity to the transducer for providing an error microphone signal indicative of the acoustic output of the transducer and the ambient audio sounds at the transducer; anda processing circuit that adaptively generates the anti-noise signal from the reference signal by adapting a first adaptive filter to reduce the presence of the ambient audio sounds heard by the listener in conformity with an error signal and the reference microphone signal, wherein the processing circuit implements a secondary path adaptive filter having a secondary path ...

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Номер записи: 96
14-11-2013 дата публикации

DOWNLINK TONE DETECTION AND ADAPTATION OF A SECONDARY PATH RESPONSE MODEL IN AN ADAPTIVE NOISE CANCELING SYSTEM

Номер: US20130301848A1
Автор: Alderson Jeffrey, Hendrix Jon D., Kamath Gautham Devendra, Lu Yang, Miller Antonio John, Yong Chin, ZHOU Dayong
Принадлежит: Cirrus Logic, Inc.

An adaptive noise canceling (ANC) circuit adaptively generates an anti-noise signal from a reference microphone signal that is injected into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone proximate the speaker provides an error signal. A secondary path estimating adaptive filter estimates the electro-acoustical path from the noise canceling circuit through the transducer so that source audio can be removed from the error signal. Tones in the source audio, such as remote ringtones, present in downlink audio during initiation of a telephone call, are detected by a tone detector using accumulated tone persistence and non-silence hangover counting, and adaptation of the secondary path estimating adaptive filter is halted to prevent adapting to the tones. Adaptation of the adaptive filters is then sequenced so any disruption of the secondary path adaptive filter response is removed before allowing the anti-noise generating filter to adapt. 1. A personal audio device , comprising:a personal audio device housing;a transducer mounted on the housing for reproducing an audio signal including both source audio for playback to a listener and an anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the transducer;a reference microphone mounted on the housing for providing a reference microphone signal indicative of the ambient audio sounds;an error microphone mounted on the housing in proximity to the transducer for providing an error microphone signal indicative of the acoustic output of the transducer and the ambient audio sounds at the transducer; anda processing circuit that generates the anti-noise signal from the reference signal by adapting a first adaptive filter to reduce the presence of the ambient audio sounds heard by the listener in conformity with an error signal and the reference microphone signal, wherein the processing circuit implements a secondary path adaptive ...

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Номер записи: 97
14-11-2013 дата публикации

ERROR-SIGNAL CONTENT CONTROLLED ADAPTATION OF SECONDARY AND LEAKAGE PATH MODELS IN NOISE-CANCELING PERSONAL AUDIO DEVICES

Номер: US20130301849A1
Автор: Alderson Jeffrey, Hendrix Jon D., Lu Yang
Принадлежит: Cirrus Logic, Inc.

A personal audio device, such as a wireless telephone, generates an anti-noise signal from a microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. The microphone measures the ambient environment, but also contains a component due to the transducer acoustic output. An adaptive filter is used to estimate the electro-acoustical path from the noise-canceling circuit through the transducer to the at least one microphone so that source audio can be removed from the microphone signal. A determination of the relative amount of the ambient sounds present in the microphone signal versus the amount of the transducer output of the source audio present in the microphone signal is made to determine whether to update the adaptive response. 1. A personal audio device , comprising:a personal audio device housing;a transducer mounted on the housing for reproducing an audio signal including both source audio for playback to a listener and an anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the transducer;at least one microphone mounted on the housing for providing at least one microphone signal indicative of the ambient audio sounds and that contains a component due to the acoustic output of the transducer; anda processing circuit that generates the anti-noise signal to reduce the presence of the ambient audio sounds heard by the listener, wherein the processing circuit implements an adaptive filter having a response that shapes the source audio and a combiner that removes the source audio from the at least one microphone signal to provide a corrected microphone signal, and wherein the processing circuit determines a relative magnitude of a source audio component of the acoustic output of the transducer present in the at least one microphone signal and the ambient audio sounds present in the at least one microphone signal, and wherein the processing ...

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Номер записи: 98
14-11-2013 дата публикации

Vibration dampening material

Номер: US20130302601A1
Автор: Carmen N. Dimario, Robert A. Vito, Thomas Falone
Принадлежит: Matscitechno Licensing Co

A vibration reducing assembly including a flexible headgear and at least one panel of vibration reducing material secured to the flexible headgear. The at least one panel of vibration reducing material includes at least a first elastomer layer and a reinforcement layer comprising a high tensile strength fibrous material.

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Номер записи: 99
21-11-2013 дата публикации

VEHICLE SOUND ABSORPTION STRUCTURE

Номер: US20130307290A1
Автор: Ide Toyoka
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A vehicle sound absorption structure has: a recessed cell that has an opening on one end of the cell; a divider that is provided within the cell and that divides an acoustic wave entering the cell from the opening into two acoustic waves; reflectors that reflect one of the two acoustic waves divided at the divider and reflect the other acoustic wave respectively toward the opening, and that generate a phase difference between the one acoustic wave and the other acoustic wave; and an interfering portion that is provided within the cell and that causes the one acoustic wave and the other acoustic wave, which have been respectively reflected at the reflectors, to interfere with each other. 119-. (canceled)20. A vehicle sound absorption structure comprising:a recessed cell that has an opening on one end thereof;a divider that is provided within the cell and that divides an acoustic wave entering the cell from the opening into two acoustic waves;reflectors that reflect one of the two acoustic waves divided at the divider and reflect the other acoustic wave respectively toward the opening, and that generate a phase difference between the one acoustic wave and the other acoustic wave;an interfering portion that is provided within the cell and that causes the one acoustic wave and the other acoustic wave, which have been respectively reflected at the reflectors, to interfere with each other; anda cover member that covers the opening and which has a slit provided on an extension of the divider.21. The vehicle sound absorption structure according to claim 20 , wherein:the divider has an end on the side of the opening and positioned more inward in the cell than the opening, while being positioned closer to the opening than one of the reflectors, the one of the reflectors being positioned closer to the opening than the other reflector; andthe interfering portion is positioned between the end and the opening.22. The vehicle sound absorption structure according to claim 21 , ...

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Номер записи: 100