| Patents for H04R 3 - Circuits for transducers (18,190) |
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| 08/01/1995 | US5438689 Radio receiver for a vehicle having improved audibility for speech |
| 08/01/1995 | US5438625 Arrangement to correct the linear and nonlinear transfer behavior or electro-acoustical transducers |
| 07/27/1995 | WO1995020304A1 Device for automatically switching between the electroacoustic transducer(s) of a radio receiver and the audio-frequency output of a radiotelephone, and equipment provided therewith |
| 07/26/1995 | EP0664605A1 Amplifier device |
| 07/26/1995 | EP0664071A1 Hearing aid having a microphone switching system |
| 07/19/1995 | EP0663748A1 Ambient noise suppression circuit for a telephone transmit channel |
| 07/19/1995 | EP0612461B1 Method and device for dynamic equalization |
| 07/19/1995 | CN2203810Y Multi-function pocket karaok machine |
| 07/19/1995 | CN1105500A Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 07/12/1995 | EP0662356A2 Generator driving method and means for the HF-energy supply of an ultrasound transducer |
| 07/11/1995 | US5432859 Noise-reduction system |
| 07/05/1995 | EP0661904A2 Noise reducing microphone apparatus |
| 07/05/1995 | EP0661903A2 A telephone set with background noise suppression function |
| 07/04/1995 | US5430802 Audio speaker system |
| 06/29/1995 | DE4343807A1 Digital loudspeaker array for electric-to-acoustic signal conversion |
| 06/28/1995 | EP0660510A1 Isolated multi-output power amplifier |
| 06/28/1995 | CN1029182C Noise eliminating element and electrical circuit having same |
| 06/27/1995 | US5427102 Active noise cancellation apparatus in MRI apparatus |
| 06/27/1995 | CA2011775C Method of detecting acoustic signal |
| 06/21/1995 | EP0659029A2 Loudspeaker selection device |
| 06/20/1995 | US5426703 Active noise eliminating system |
| 06/15/1995 | WO1995016259A1 A noise reduction system and device, and a mobile radio station |
| 06/14/1995 | EP0658064A2 Acoustic reproducing apparatus |
| 06/14/1995 | EP0520067B1 Improved audio distribution system |
| 06/08/1995 | WO1995015667A1 Improvement to a power amplifier/loudspeaker interface |
| 06/06/1995 | US5423073 Acoustic signal transmitting system |
| 06/06/1995 | US5422956 Sound parameter controller for use with a microphone |
| 06/01/1995 | DE4340641A1 Low loss amplitude- and phase-control of audio loudspeaker |
| 05/24/1995 | EP0654954A1 Method and apparatus for volume and intelligibility control for a loudspeaker |
| 05/23/1995 | US5418860 Voice coil excursion and amplitude gain control device |
| 05/23/1995 | US5418859 Correcting apparatus of sound signal distortion by way of audio frequency band segmentation |
| 05/23/1995 | CA1335674C Electronic filters, signal conversion apparatus, hearing aids and methods |
| 05/18/1995 | EP0664071A4 Hearing aid having a microphone switching system. |
| 05/16/1995 | US5416846 Noise control system and method |
| 05/11/1995 | WO1995012961A1 Gradient directional microphone system and method therefor |
| 05/11/1995 | DE4336608A1 Circuit arrangement for protecting electrodynamic loudspeakers against mechanical overloading by a high voice coil deflection |
| 05/10/1995 | EP0652686A1 Adaptive microphone array |
| 05/10/1995 | EP0651907A1 Method and device for active noise reduction in a local area. |
| 05/04/1995 | DE4336609A1 Predictive protective circuit for electroacoustic sound transmitters |
| 05/02/1995 | US5412735 Adaptive noise reduction circuit for a sound reproduction system |
| 05/02/1995 | US5412734 Apparatus and method for reducing acoustic feedback |
| 05/02/1995 | US5412733 Acoustic reproducing apparatus |
| 04/19/1995 | EP0649268A1 Appliance for the signal transmission from an amplifier to a loudspeaker |
| 04/19/1995 | EP0648166A1 Process and circuitry for supplying signals to loudspeakers and other electric consumers arranged in vehicle doors |
| 04/18/1995 | US5408533 Motional feedback speaker system with radially polarized magnet and underhung voice-coil |
| 04/18/1995 | CA2016301C Image derived directional microphones |
| 04/13/1995 | WO1995010164A1 Microphone system for teleconferencing system |
| 04/13/1995 | DE4334040A1 Circuit arrangement for the automatic correction of the transfer characteristics of electrodynamic sound transmitters without additional mechanical or acoustic sensor |
| 04/11/1995 | US5406633 Hearing aid with permanently adjusted frequency response |
| 04/06/1995 | DE4333843A1 Preventing acoustic feedback in the microphone circuit |
| 04/05/1995 | CN1101203A Anti-noise earphone |
| 04/05/1995 | CN1101202A Asymmeirical tranducing |
| 04/04/1995 | US5404397 Conference system with automatic speaker detection and speaker unit |
| 03/30/1995 | WO1995008906A1 Digitally controlled analog cancellation system |
| 03/30/1995 | DE4332804A1 Adaptive correction circuit for electroacoustic sound transmitters |
| 03/28/1995 | US5402497 Headphone apparatus for reducing circumference noise |
| 03/28/1995 | US5402496 Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering |
| 03/23/1995 | WO1995008249A1 Apparatus and method for reducing acoustic feedback |
| 03/23/1995 | DE4407102C1 Method and arrangement for controlling an electroacoustic system having a tendency to develop acoustic feedback |
| 03/22/1995 | EP0575598A4 Multi-zone audio distribution amplifier. |
| 03/21/1995 | US5400409 Noise-reduction method for noise-affected voice channels |
| 03/21/1995 | US5399986 Isolated multi-output power amplifier |
| 03/16/1995 | WO1995007597A1 Mobile radiotelephone set with handsfree device |
| 03/15/1995 | EP0584299A4 Improved audio distribution system. |
| 03/14/1995 | US5398287 Voice activated multiple microphone electroacoustic amplifier system |
| 03/09/1995 | DE4329003A1 Hi-fi loudspeaker with low bass facility |
| 03/08/1995 | EP0642292A2 Device for sonic stereo reproduction |
| 03/08/1995 | EP0642290A2 Mobile communication apparatus with speech processing device |
| 03/01/1995 | EP0641143A2 Method for simulating spatial and/or sonic impression |
| 02/28/1995 | US5394472 Monaural to stereo sound translation process and apparatus |
| 02/23/1995 | WO1995005724A1 Spatial sound reproduction system |
| 02/21/1995 | US5392381 Acoustic analysis device and a frequency conversion device used therefor |
| 02/14/1995 | US5389829 Output limiter for class-D BICMOS hearing aid output amplifier |
| 02/14/1995 | CA2048234C Audio dosage control system |
| 02/08/1995 | CN1098539A Sound system gain and equalization circuit |
| 02/07/1995 | US5387875 For generating a pulse form drive signal |
| 01/31/1995 | US5386474 Amplifier-speaker interface correction circuit |
| 01/26/1995 | DE4324611A1 Method for providing sound to an area and arrangement for carrying out the method |
| 01/24/1995 | US5384856 Acoustic system |
| 01/24/1995 | US5384855 Audio system for vehicular application |
| 01/18/1995 | EP0634881A1 Determination of position |
| 01/12/1995 | WO1995001678A1 Short range inductively coupled communication system employing time variant modulation |
| 01/10/1995 | US5381485 Active sound control systems and sound reproduction systems |
| 01/10/1995 | US5381473 Noise cancellation apparatus |
| 01/04/1995 | EP0632674A1 Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 12/28/1994 | EP0631380A1 Sequential amplifier |
| 12/27/1994 | US5377274 Correction circuit and method for improving the transient behavior of a two-way loudspeaker system |
| 12/27/1994 | US5377273 Batteryless power supply for transducers |
| 12/22/1994 | WO1994030029A1 Hybrid noise cancellation system for headsets |
| 12/21/1994 | CN1096621A Noise cancellation apparatus |
| 12/20/1994 | US5374124 Multi-compound isobarik loudspeaker system |
| 12/13/1994 | US5373563 Self damping speaker matching device |
| 12/08/1994 | WO1994028679A1 An integrated video and audio signal distribution system for use on commercial aircraft and other vehicles |
| 12/08/1994 | WO1994027525A1 Active ear defender |
| 12/07/1994 | EP0627139A1 Feedback level estimator between loudspeaker and microphone |
| 11/29/1994 | US5369710 Sound field correcting apparatus and method |
| 11/24/1994 | WO1994027415A1 Voice coil excursion and amplitude gain control device |
| 11/23/1994 | EP0625379A2 Signal conditioning and interconnection for an acoustic transducer |
| 11/22/1994 | US5367506 Sound collecting system and sound reproducing system |
| 11/17/1994 | EP0624963A1 Sound echo cancelling system for satellite news gathering systems |