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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616768 |
Vehicle accessory microphone having mechanism for reducing line-induced noise |
Nov. 10, 2009 |
| 7613309 |
Interference suppression techniques |
Nov. 3, 2009 |
| 7599502 |
Sound control installation |
Oct. 6, 2009 |
| 7599705 |
Wireless transmitter and hearing system |
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 |
| 7590253 |
Hearing aid having switchable first and second order directional responses |
Sep. 15, 2009 |
| 7587058 |
Method and device for matching the phases of microphone signals of a directional microphone of a hearing aid |
Sep. 8, 2009 |
| 7587056 |
Small array microphone apparatus and noise suppression methods thereof |
Sep. 8, 2009 |
| 7587055 |
Sound collection system |
Sep. 8, 2009 |
| 7587053 |
Audio-based position tracking |
Sep. 8, 2009 |
| 7586513 |
Arrangement and method for audio source tracking |
Sep. 8, 2009 |
| 7587054 |
Audio system based on at least second-order eigenbeams |
Sep. 8, 2009 |
| 7583808 |
Locating and tracking acoustic sources with microphone arrays |
Sep. 1, 2009 |
| 7577262 |
Microphone device and audio player |
Aug. 18, 2009 |
| 7577266 |
Systems and methods for interference suppression with directional sensing patterns |
Aug. 18, 2009 |
| 7567678 |
Microphone array method and system, and speech recognition method and system using the same |
Jul. 28, 2009 |
| 7565288 |
Spatial noise suppression for a microphone array |
Jul. 21, 2009 |
| 7561700 |
Auto-adjust noise canceling microphone with position sensor |
Jul. 14, 2009 |
| 7561701 |
Method and apparatus for identifying the direction of incidence of an incoming audio signal |
Jul. 14, 2009 |
| 7522736 |
Systems and methods for microphone localization |
Apr. 21, 2009 |
| 7519187 |
Array speaker system |
Apr. 14, 2009 |
| 7519186 |
Noise reduction systems and methods for voice applications |
Apr. 14, 2009 |
| 7515721 |
Self-descriptive microphone array |
Apr. 7, 2009 |
| 7502479 |
Method for analyzing an acoustical environment and a system to do so |
Mar. 10, 2009 |
| 7499554 |
Electronic devices, methods, and computer program products for detecting noise in a signal based on autocorrelation coefficient gradients |
Mar. 3, 2009 |
| 7492914 |
Audio receiving system |
Feb. 17, 2009 |
| 7492911 |
Noise reducing device |
Feb. 17, 2009 |
| 7492908 |
Sound localization system based on analysis of the sound field |
Feb. 17, 2009 |
| 7489788 |
Recording a three dimensional auditory scene and reproducing it for the individual listener |
Feb. 10, 2009 |
| 7477751 |
Method and apparatus for sound transduction with minimal interference from background noise and minimal local acoustic radiation |
Jan. 13, 2009 |
| 7478041 |
Speech recognition apparatus, speech recognition apparatus and program thereof |
Jan. 13, 2009 |
| 7475014 |
Method and system for tracking signal sources with wrapped-phase hidden markov models |
Jan. 6, 2009 |
| 7474755 |
Automatic microphone equalization in a directional microphone system with at least three microphones |
Jan. 6, 2009 |
| 7471798 |
Microphone array having a second order directional pattern |
Dec. 30, 2008 |
| 7471987 |
Determining location of an audience member having a portable media monitor |
Dec. 30, 2008 |
| 7460677 |
Directional microphone array system |
Dec. 2, 2008 |
| 7454023 |
Audio processing arrangement with multiple sources |
Nov. 18, 2008 |
| 7453770 |
Method for directional location and locating system |
Nov. 18, 2008 |
| 7447320 |
Vehicle accessory microphone |
Nov. 4, 2008 |
| 7443988 |
Vehicle accessory microphone |
Oct. 28, 2008 |
| 7443989 |
Adaptive beamforming method and apparatus using feedback structure |
Oct. 28, 2008 |
| 7433481 |
Digital hearing aid system |
Oct. 7, 2008 |
| 7428309 |
Analog preamplifier measurement for a microphone array |
Sep. 23, 2008 |
| 7415117 |
System and method for beamforming using a microphone array |
Aug. 19, 2008 |
| 7409065 |
Apparatus and method for detecting sound direction |
Aug. 5, 2008 |
| 7408841 |
System and method for calculating the directivity index of a passive acoustic array |
Aug. 5, 2008 |
| 7409068 |
Low-noise directional microphone system |
Aug. 5, 2008 |
| 7400736 |
Method for extending the frequency range of a beamformer without spatial aliasing |
Jul. 15, 2008 |
| 7394907 |
System and process for sound source localization using microphone array beamsteering |
Jul. 1, 2008 |
| 7386135 |
Cardioid beam with a desired null based acoustic devices, systems and methods |
Jun. 10, 2008 |
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