| Patents for H04R 29 - Monitoring arrangements; Testing arrangements (4,957) |
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| 01/25/2001 | WO2001006808A2 Method and apparatus for supervising an audio circuit with continuous audio |
| 01/25/2001 | CA2380397A1 Method and apparatus for supervising an audio circuit with continuous audio |
| 01/16/2001 | US6175632 Universal beat synchronization of audio and lighting sources with interactive visual cueing |
| 01/11/2001 | DE10027618A1 Audio transformer construction with phase and amplitude transition linearisation |
| 12/26/2000 | US6167138 Spatialization for hearing evaluation |
| 11/30/2000 | DE19918883C1 Obtaining directional microphone characteristic for hearing aid |
| 11/29/2000 | EP1055351A1 Acoustic device comprising a panel member relying on bending wave action |
| 11/23/2000 | WO2000048427A3 Method and system of compensating for boundary effects on a primary sound source |
| 11/07/2000 | US6144692 System and method of testing for passive intermodulation in antennas |
| 11/02/2000 | WO2000065873A1 Programmable multi-mode, multi-microphone system |
| 10/26/2000 | WO2000064217A1 Flat surface loudspeaker and method for operating the same |
| 10/26/2000 | DE19917584A1 Flat panel loudspeaker operating method |
| 10/19/2000 | WO2000044196A3 System and method for evaluating the quality of multi-channel audiosignals |
| 10/17/2000 | US6134329 Method of measuring and preventing unstable feedback in hearing aids |
| 09/28/2000 | WO2000057671A2 Method and device for receiving and treating audiosignals in surroundings affected by noise |
| 09/28/2000 | CA2367579A1 Method and device for recording and processing audio signals in an environment filled with acoustic noise |
| 09/21/2000 | WO2000056119A1 Intelligent speaker training using microphone feedback and pre-loaded templates |
| 09/19/2000 | US6122609 Method and device for the optimized processing of a disturbing signal during a sound capture |
| 09/12/2000 | US6118880 Method and system for dynamically maintaining audio balance in a stereo audio system |
| 09/06/2000 | EP1033063A1 Feedback cancellation apparatus and methods |
| 08/29/2000 | US6111957 Apparatus and method for adjusting audio equipment in acoustic environments |
| 08/22/2000 | US6105443 Dummy sound absorber representing a seated human for measuring sound absorption power of a theater chair |
| 08/17/2000 | WO2000048427A2 Method and system of compensating for boundary effects on a primary sound source |
| 08/08/2000 | US6101258 Hearing aid having plural microphones and a microphone switching system |
| 08/01/2000 | US6097819 Method for testing noise of a record/play-back loop in a computer audio system |
| 07/27/2000 | WO2000044198A1 Hearing aid system and hearing aid for in-situ fitting |
| 07/27/2000 | WO2000044196A2 System and method for evaluating the quality of multi-channel audiosignals |
| 07/27/2000 | WO2000044113A1 Reducing acoustic feedback with digital modulation |
| 07/20/2000 | DE19901288A1 Loudspeaker monitoring unit for multiple speaker systems uses monitor and coding unit at each loudspeaker. |
| 07/18/2000 | US6091826 Method for implementing a sound reproduction system for a large space, and a sound reproduction system |
| 07/13/2000 | WO2000041442A1 Method for the binaural adjustment of hearing aids |
| 07/13/2000 | CA2358199A1 Method for the binaural adjustment of hearing aids |
| 07/12/2000 | CN1260104A Virtual electroacoustic audiometry for unaided, simulated aided, and aided hearing evaluation |
| 07/11/2000 | US6088459 Loudspeaker system with simulated baffle for improved base reproduction |
| 07/06/2000 | WO1999049715A3 Device for adapting at least one acoustic hearing aid |
| 07/05/2000 | CN2386591Y Silence control device for audio |
| 06/28/2000 | EP0910849A4 Feedback capable earphones and a computerized audiometer which contains them |
| 06/28/2000 | EP0873667A4 Sound system |
| 06/06/2000 | US6072884 Feedback cancellation apparatus and methods |
| 06/06/2000 | US6072392 Apparatus and method for monitoring and recording the audible environment of a child, patient, older person or pet left in the care of a third person or persons |
| 05/31/2000 | EP0815706B1 Signal quality determining device and method |
| 05/31/2000 | DE19849739A1 Hearing aid with directional microphone system has comparison of microphone signal amplitudes used for controlling regulating element for equalization of microphone signals |
| 05/17/2000 | EP1001652A2 Automatic loudspeaker equalizer |
| 05/16/2000 | US6064966 Signal quality determining device and method |
| 05/16/2000 | US6064946 Signal quality determining device and method |
| 05/16/2000 | US6064742 Audio impedance/calculated power meter |
| 05/10/2000 | EP0945045B1 Device and method for signal quality determination |
| 05/09/2000 | US6061456 Noise cancellation apparatus |
| 04/20/2000 | CA2255810A1 Apparatus for and method of testing electronic devices for electromagnetic interference |
| 04/13/2000 | WO2000021331A1 Environment adaptable loudspeaker |
| 04/04/2000 | CA2215764C Process for controlling a programmable or program-controlled hearing aid for its in-situ fitting adjustment |
| 03/29/2000 | EP0988774A1 Improved artificial ear and auditory canal system and means of manufacturing the same |
| 03/29/2000 | EP0561881B1 Compensating filters |
| 03/29/2000 | CN1248880A Loudspeak polarity judging circuit and audio circuit with function of polarity judging and switching |
| 03/23/2000 | WO2000016590A1 System for programming hearing aids |
| 03/23/2000 | CA2343986A1 System for programming hearing aids |
| 03/21/2000 | US6041294 Signal quality determining device and method |
| 03/07/2000 | US6035046 Recorded conversation method for evaluating the performance of speakerphones |
| 03/01/2000 | EP0982971A2 Apparatus and method for matching the response of microphones in magnitude and phase |
| 02/29/2000 | CA2264112C Triggering of a measurement method for the quality assessment of audio and/or speech signals |
| 02/24/2000 | WO2000010145A1 Apparatus and method for monitoring and recording the audible environment |
| 02/10/2000 | WO2000006065A1 First draft-active noise reduction audiometry headphones |
| 01/13/2000 | WO2000002420A1 Apparatus and method for adjusting audio equipment in acoustic environments |
| 01/13/2000 | DE19902317C1 Quality evaluation arrangement for multiple channel audio signals |
| 01/13/2000 | DE19830620A1 Transmission and processing method for audio frequency signals |
| 12/29/1999 | EP0967833A2 PA system having zone isolator circuits |
| 12/23/1999 | WO1999066492A1 Sound reproduction equipment and method for reducing the level of acoustical reflections in a room |
| 12/22/1999 | EP0870298A4 Noise cancellation and noise reduction apparatus |
| 12/22/1999 | CN1239639A Device and method for signal quality determination |
| 12/14/1999 | US6002776 Directional acoustic signal processor and method therefor |
| 12/08/1999 | EP0716403B1 Monitor apparatus of alarm apparatus |
| 12/02/1999 | DE19822021A1 Hearing aid with automatic microphone tuning |
| 11/25/1999 | WO1999060822A1 Feedback cancellation improvements |
| 11/23/1999 | US5991417 Process for controlling a programmable or program-controlled hearing aid for its in-situ fitting adjustment |
| 11/10/1999 | CN2348534Y Electrocardiosignal monitoring instrument using two buttons |
| 11/10/1999 | CN1234895A Noise cancellation and noise reduction apparatus |
| 11/04/1999 | WO1999056497A1 Method and apparatus for locating bending wave transducer means |
| 11/04/1999 | CA2330303A1 Method and apparatus for locating bending wave transducer means |
| 10/26/1999 | US5970795 Apparatus and method for testing attenuation of in-use insert hearing protectors |
| 10/21/1999 | WO1999039545A3 Directional microphone assembly for mounting behind a surface |
| 10/07/1999 | WO1999049715A2 Device for adapting at least one acoustic hearing aid |
| 10/07/1999 | CA2380436A1 Device for adapting at least one acoustic hearing aid |
| 09/29/1999 | EP0945045A1 Device and method for signal quality determination |
| 09/15/1999 | EP0942628A2 Microphone assembly and calibration method |
| 09/14/1999 | US5953429 Integrated video and audio signal distribution system and method for use on commercial aircraft and other vehicles |
| 09/10/1999 | WO1999045741A2 Directional microphone system |
| 09/08/1999 | EP0891685B1 Triggering a measurement process for evaluating the quality of audio and/or speech signals |
| 09/07/1999 | US5949892 Method of and apparatus for dynamically controlling operating characteristics of a microphone |
| 09/01/1999 | EP0938831A1 Hearing-adapted quality assessment of audio signals |
| 08/19/1999 | WO1999041939A1 Acoustic device comprising a panel member relying on bending wave action |
| 08/19/1999 | CA2317550A1 Acoustic device comprising a panel member relying on bending wave action |
| 08/17/1999 | US5940788 Method and system for designing vehicle door seals based on predicted sound transmission characteristics |
| 08/17/1999 | US5940518 In a vehicle radio |
| 08/17/1999 | US5940517 Sound-volume display unit for use in audio system |
| 08/05/1999 | WO1999039545A2 Directional microphone assembly for mounting behind a surface |
| 08/03/1999 | CA2174271C Microphone selection process for use in a multiple microphone voice actuated switching system |
| 07/27/1999 | US5928160 Home hearing test system and method |
| 07/21/1999 | EP0930802A2 Microphone bias current measurement circuit |
| 07/13/1999 | US5923764 Virtual electroacoustic audiometry for unaided simulated aided, and aided hearing evaluation |
| 07/07/1999 | CN2328145Y Intellectual identifier for microphone control |