| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 05/08/2002 | EP1204294A2 Sound field forming circuit and sound field forming apparatus |
| 05/08/2002 | EP1204293A2 Speech communication apparatus |
| 05/08/2002 | EP0966790A4 Apparatus and methods for the harmonic enhancement of electronic audio signals |
| 05/08/2002 | EP0883972B1 Acoustic element and method for sound processing |
| 05/08/2002 | DE10054316A1 Method for compensating for an unintentional membrane excursion in loudspeakers built in a vehicle caused by a pressure increase in the vehicle's interior detects a measurable variable with a functional relation to the excursion. |
| 05/08/2002 | CN2490777Y Shared device |
| 05/08/2002 | CN1348673A Loudspeaker protection system having frequency band selective audio power control |
| 05/08/2002 | CN1348318A Complex sound exciter drive circuit and portable information terminal |
| 05/07/2002 | US6385322 Method and device for operation of a public address (acoustic irradiation) system |
| 05/07/2002 | US6384550 Speaker and drive device therefor |
| 05/02/2002 | WO2001065867A3 Mobile communication terminal and car mounted electronic device |
| 05/02/2002 | US20020052685 Position guiding method and system using sound changes |
| 05/02/2002 | US20020051546 Variable attack & release system and method |
| 05/02/2002 | EP1202607A2 Sound field measuring apparatus and method |
| 05/02/2002 | EP1202602A2 Zoom microphone device |
| 05/02/2002 | DE10152602A1 Electrostatic loudspeaker equipment has bias voltage applied between oscillator electrode and fixed electrode |
| 05/02/2002 | DE10051699A1 Microphone for voice acquisition in environment subjected to loudspeaker sound adds electrical audio signals controlling loudspeaker membrane to microphone signal |
| 04/30/2002 | US6381335 Audio speaker system for personal computer |
| 04/30/2002 | US6381334 Series-configured crossover network for electro-acoustic loudspeakers |
| 04/30/2002 | US6381272 Multi-channel adaptive filtering |
| 04/25/2002 | WO2002032356A1 Transient processing for communication system |
| 04/25/2002 | US20020049735 Sound retrieval apparatus, and sound data recording apparatus |
| 04/25/2002 | US20020049509 Reproduction apparatus and music delivery system |
| 04/25/2002 | US20020048381 Multichannel acoustic signal reproducing apparatus |
| 04/25/2002 | US20020048378 Deep bass sound booster device |
| 04/25/2002 | US20020048377 Noise canceling microphone |
| 04/25/2002 | US20020048376 Signal processing apparatus and signal processing method |
| 04/25/2002 | US20020048373 Optical microphone portable telephone |
| 04/24/2002 | EP1198972A1 Electric signal processing for electroacoustic transducer |
| 04/18/2002 | US20020044667 Method and apparatus for reduction of unwanted feedback |
| 04/18/2002 | US20020044666 Echo suppression device and method for performing the same |
| 04/18/2002 | US20020044046 Compound acoustic actuator drive circuit and portable information terminal |
| 04/17/2002 | EP1198070A2 Interactive sound reproducing |
| 04/17/2002 | EP1197948A2 Karaoke device with built-in microphone and microphone therefor |
| 04/17/2002 | EP1196907A1 Audio signal sound diffusion system |
| 04/17/2002 | CN2487185Y Fixed frequency receiving radio FM earphone |
| 04/16/2002 | US6373956 Method and arrangement for attenuating mechanical resonance in a loudspeaker |
| 04/16/2002 | US6373955 Loudspeakers |
| 04/11/2002 | WO2002030099A1 Echo attenuating method and device |
| 04/11/2002 | US20020041695 Method and apparatus for an adaptive binaural beamforming system |
| 04/11/2002 | US20020041693 Microphone array apparatus |
| 04/10/2002 | CN1344479A High efficiency audio frequency transmission channel |
| 04/09/2002 | US6370253 Sound reproducing device |
| 04/04/2002 | WO2002028140A2 Second order microphone array |
| 04/04/2002 | WO2001078060A3 Rhythmic apparatus, rhythmic accompaniment method and electronic transducer |
| 04/04/2002 | US20020039426 Audio apparatus, audio volume control method in audio apparatus, and computer apparatus |
| 04/04/2002 | DE10046238A1 Verfahren zur Verarbeitung von Audiosignalen A method for processing audio signals |
| 04/03/2002 | EP1194000A1 Sub-woofer system |
| 04/03/2002 | EP1193867A2 Digital amplifier |
| 04/03/2002 | EP1193684A2 Noise cancellation for a retail transaction station |
| 04/03/2002 | EP1192837A2 Method for processing an audio signal |
| 04/03/2002 | EP1192836A1 Microphone with range switching |
| 04/03/2002 | CN1343436A Method for shaping spatial reception amplification characteristic of converter arrangement and converter arrangement |
| 04/03/2002 | CN1343345A Vibrator and method of controlling vibrator |
| 04/02/2002 | US6366679 Multi-channel sound transmission method |
| 03/28/2002 | WO2002025992A2 Loudspeaker driver |
| 03/28/2002 | WO2001097558A3 Fixed polar-pattern-based adaptive directionality systems |
| 03/28/2002 | WO2001067807A3 Electro-acoustic transducer for eliminating interfering noises |
| 03/28/2002 | US20020038215 In-vehicle device, car navigation system and monitoring device |
| 03/28/2002 | DE10045201A1 Akustische Wiedergabeeinrichtung Acoustic reproducing device |
| 03/27/2002 | EP1191810A1 Semiconductor electret capacitor microphone |
| 03/27/2002 | EP1190598A1 Voice-to-remaining audio (vra) interactive center channel downmix |
| 03/27/2002 | EP1190597A1 Voice-to-remaining audio (vra) interactive hearing aid & auxiliary equipment |
| 03/27/2002 | EP1190417A1 Cancellation of non-stationary interfering signals for speech recognition |
| 03/27/2002 | CN1342386A Low-frequency audio enhancement system |
| 03/21/2002 | WO2002023948A1 Method for controlling a transmission system, use of this method, transmission system, receiving unit and hearing aid |
| 03/21/2002 | WO2002023945A1 A system of sound transducers with controllable directional properties |
| 03/21/2002 | WO2002023944A2 Acoustic playback device |
| 03/21/2002 | WO2002023373A1 Sound activated circuit |
| 03/21/2002 | WO2001054451A3 A directional microphone assembly |
| 03/21/2002 | US20020034312 Capacitor microphone |
| 03/21/2002 | US20020034310 Adaptive microphone matching in multi-microphone directional system |
| 03/21/2002 | DE10043064A1 Loudspeaker noise cancellation system for head sets removes echos in long delay links |
| 03/20/2002 | EP1189419A2 Method and device for eliminating the loudspeaker interference on microphone signals |
| 03/20/2002 | EP1189031A2 Method for processing audio signals |
| 03/20/2002 | CN2482774Y Contactless electronic horn internal circuit board insulating structure |
| 03/19/2002 | US6359991 Greetings or the like card |
| 03/14/2002 | WO2002021879A2 Digital system to compensate power compression of loudspeakers |
| 03/14/2002 | WO2001080708A3 Systems and methods for reducing secondary hot spots in a phased array focused ultrasound system |
| 03/14/2002 | WO2001023104A3 Method and apparatus to direct sound using an array of output transducers |
| 03/14/2002 | US20020031237 Focus fader with adjustable tension |
| 03/14/2002 | US20020031236 Input apparatus, reproducing apparatus and volume adjusting method |
| 03/14/2002 | US20020031235 Mute apparatus and mute method |
| 03/14/2002 | US20020031234 Microphone system for in-car audio pickup |
| 03/14/2002 | US20020031233 Karaoke device with built-in microphone and microphone therefor |
| 03/14/2002 | US20020029686 Sound system and method for creating a sound event based on a modeled sound field |
| 03/13/2002 | EP1186157A1 Symmetry based subband acoustic echo cancellation |
| 03/13/2002 | EP1186156A2 Adaptability to multiple hands-free communication accessories |
| 03/13/2002 | EP1186155A2 Loudspeaker volume range control |
| 03/13/2002 | CN1339938A Reproducing device for multiple sound channel signals |
| 03/12/2002 | US6356641 Vehicular loudspeaker system |
| 03/12/2002 | CA2228952C Noise cancellation and noise reduction apparatus |
| 03/07/2002 | US20020029132 Background noise eliminating apparatus and method, and storage medium storing program realizing such method |
| 03/07/2002 | US20020027999 Acoustic device |
| 03/06/2002 | EP1183911A2 Virtual multichannel speaker system |
| 03/06/2002 | EP1183848A1 System and method for near-end talker detection by spectrum analysis |
| 03/06/2002 | EP1077013B1 Method and device for operating voice-controlled systems in motor vehicles |
| 03/06/2002 | EP0986933B1 Continuous frequency dynamic range audio compressor |
| 03/06/2002 | CN1339234A Loudspeaker |
| 03/05/2002 | US6353670 Actively control sound transducer |