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Browse by Category: Main > Electrical & Energy
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
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
7787636 Filtering a microphone signal to remove noise components generated by a disk drive Aug. 31, 2010
7787638 Method for reproducing natural or modified spatial impression in multichannel listening Aug. 31, 2010
7783063 Digital linking of multiple microphone systems Aug. 24, 2010
7783061 Methods and apparatus for the targeted sound detection Aug. 24, 2010
7783060 Deconvolution methods and systems for the mapping of acoustic sources from phased microphone arrays 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
7706549 Broadside small array microphone beamforming apparatus Apr. 27, 2010
7702116 Microphone bleed simulator Apr. 20, 2010
7697698 Sound-based vehicle safety system Apr. 13, 2010
7688985 Automatic microphone matching Mar. 30, 2010
7688990 Hearing aid with anti feedback system Mar. 30, 2010
7684571 System and method of generating an audio signal Mar. 23, 2010
7680287 Directional setting apparatus, directional setting system, directional setting method and directional setting program Mar. 16, 2010
7680286 Sound field measurement device Mar. 16, 2010
7676052 Differential microphone assembly Mar. 9, 2010
7657038 Method and device for noise reduction Feb. 2, 2010
7646876 System and method for stereo operation of microphones for video conferencing system Jan. 12, 2010
7643641 System for communication enhancement in a noisy environment Jan. 5, 2010
7630503 Detecting acoustic echoes using microphone arrays Dec. 8, 2009
7630502 Method for optimal microphone array design under uniform acoustic coupling constraints Dec. 8, 2009
7616768 Vehicle accessory microphone having mechanism for reducing line-induced noise Nov. 10, 2009
7613309 Interference suppression techniques Nov. 3, 2009
7599705 Wireless transmitter and hearing system Oct. 6, 2009
7599502 Sound control installation Oct. 6, 2009
7596230 Method for detection of ultrasound in a listening device with two or more microphones, and listening device with two or more microphones Sep. 29, 2009

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