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Class Information
Number: 381/92
Name: Electrical audio signal processing systems and devices > Directive circuits for microphones
Description: Subject matter including a circuit for imparting directional pickup characteristics to microphones.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7949520 Adaptive filter pitch extraction May. 24, 2011
7945056 Listening device with two or more microphones May. 17, 2011
7933423 Method for controlling the directionality of the sound receiving characteristic of a hearing aid and a signal processing apparatus Apr. 26, 2011
7933684 Autonomous mobile robot Apr. 26, 2011
7925034 Method for operating a hearing device as well as a hearing device Apr. 12, 2011
7920709 Vector sound-intensity probes operating in a half-space Apr. 5, 2011
7916849 Systems and methods for managing the gating of microphones in a multi-pod conference system Mar. 29, 2011
7912228 Device and method for operating voice-supported systems in motor vehicles Mar. 22, 2011
7894616 Condenser microphone employing wide band stop filter and having improved resistance to electrostatic discharge Feb. 22, 2011
7889873 Microphone aperture Feb. 15, 2011
7889878 Speaker array apparatus and method for setting audio beams of speaker array apparatus Feb. 15, 2011
7881480 System for detecting and reducing noise via a microphone array Feb. 1, 2011
7876914 Processing audio data Jan. 25, 2011
7869611 Test tone determination method and sound field correction apparatus Jan. 11, 2011
7864971 System and method for determining directionality of sound detected by a hearing aid Jan. 4, 2011
7864969 Adaptive amplifier circuitry for microphone array Jan. 4, 2011
7856106 System and method for determining a representation of an acoustic field Dec. 21, 2010
7856240 Distributed sound enhancement Dec. 21, 2010
7848529 Broadside small array microphone beamforming unit Dec. 7, 2010
7840013 Microphone array with physical beamforming using omnidirectional microphones Nov. 23, 2010
7835530 Systems and methods for determining sound of a moving object Nov. 16, 2010
7831053 System and method for matching microphones Nov. 9, 2010
7826623 Handsfree system for use in a vehicle Nov. 2, 2010
7826624 Speakerphone self calibration and beam forming Nov. 2, 2010
7822213 System and method for estimating speaker's location in non-stationary noise environment Oct. 26, 2010
7822217 Hearing assistance systems for providing second-order gradient directional signals Oct. 26, 2010
7817808 Dual adaptive structure for speech enhancement Oct. 19, 2010
7817806 Sound pickup method and apparatus, sound pickup and reproduction method, and sound reproduction apparatus Oct. 19, 2010
7817805 System and method for steering the directional response of a microphone to a moving acoustic source Oct. 19, 2010
7817804 Acoustic measuring system for locating noise sources Oct. 19, 2010
7813923 Calibration based beamforming, non-linear adaptive filtering, and multi-sensor headset Oct. 12, 2010
7809145 Ultra small microphone array Oct. 5, 2010
7803050 Tracking device with sound emitter for use in obtaining information for controlling game program execution Sep. 28, 2010
7797154 Signal noise reduction Sep. 14, 2010
7792313 High precision beamsteerer based on fixed beamforming approach beampatterns Sep. 7, 2010
7787638 Method for reproducing natural or modified spatial impression in multichannel listening Aug. 31, 2010
7787636 Filtering a microphone signal to remove noise components generated by a disk drive Aug. 31, 2010
7783060 Deconvolution methods and systems for the mapping of acoustic sources from phased microphone arrays Aug. 24, 2010
7783061 Methods and apparatus for the targeted sound detection Aug. 24, 2010
7783063 Digital linking of multiple microphone systems Aug. 24, 2010
7778425 Method for generating noise references for generalized sidelobe canceling Aug. 17, 2010
7764801 Directional microphone array system Jul. 27, 2010
7760891 Focused hypersonic communication Jul. 20, 2010
7760248 Selective sound source listening in conjunction with computer interactive processing Jul. 20, 2010
7756278 Ultra-directional microphones Jul. 13, 2010
7751575 Microphone system for communication devices Jul. 6, 2010
7742790 Environmental noise reduction and cancellation for a communication device including for a wireless and cellular telephone Jun. 22, 2010
7724680 Method and technique for the processing and intelligent display of wideband direction-finding data May. 25, 2010
7720679 Speech recognition apparatus, speech recognition apparatus and program thereof May. 18, 2010
7711127 Apparatus, method and program for processing acoustic signal, and recording medium in which acoustic signal, processing program is recorded May. 4, 2010

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