| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 07/17/2002 | EP1223572A2 Active noise control system |
| 07/17/2002 | EP1222734A1 Multiple driver, resonantly-coupled loudspeaker |
| 07/17/2002 | EP0858720B1 Method and apparatus for reduction of unwanted feedback |
| 07/16/2002 | US6420965 Vibrator |
| 07/16/2002 | US6419648 Systems and methods for reducing secondary hot spots in a phased array focused ultrasound system |
| 07/11/2002 | WO2002054740A1 A sound-based proximity detector for use in a mobile telephone apparatus |
| 07/11/2002 | WO2002054719A2 Method and apparatus for active reduction of speakerphone echo |
| 07/11/2002 | US20020090094 System and method for microphone gain adjust based on speaker orientation |
| 07/10/2002 | EP1221824A1 Loudspeaker device |
| 07/10/2002 | EP1221159A1 Method and apparatus for performing level compensation for an input signal |
| 07/09/2002 | US6418231 High back EMF, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround |
| 07/09/2002 | US6418227 Active noise control system and method for on-line feedback path modeling |
| 07/09/2002 | US6418080 Underwater detection apparatus |
| 07/09/2002 | CA2215746C Method and apparatus for separation of sound source, program recorded medium therefor, method and apparatus for detection of sound source zone, and program recorded medium therefor |
| 07/04/2002 | US20020087305 Method and apparatus for active reduction of speakerphone singing |
| 07/04/2002 | US20020086656 Sound-based proximity detector |
| 07/04/2002 | US20020085725 System output control method and apparatus |
| 07/03/2002 | EP1219134A1 Method and apparatus for treating an audio signal |
| 07/03/2002 | EP1018288B1 Car radio system |
| 07/03/2002 | EP0951798B1 Acoustic feedback correction |
| 07/03/2002 | CN2498811Y Protective device for loudspeaker |
| 07/03/2002 | CN2498711Y Recorder with radio |
| 07/03/2002 | CN1356850A Integrated power amplifier |
| 06/27/2002 | WO2002005261A3 Dynamic power sharing in a multi-channel sound system |
| 06/27/2002 | US20020080982 Sound-collecting device |
| 06/27/2002 | US20020080981 Signal processing method, program, and signal processing apparatus |
| 06/27/2002 | US20020080980 Microphone array apparatus |
| 06/27/2002 | US20020080978 Active noise control system |
| 06/27/2002 | US20020080241 Video camera with microphone |
| 06/27/2002 | US20020079437 Sound-collecting device |
| 06/26/2002 | EP1217736A2 Loudspeaker circuit |
| 06/26/2002 | EP1217732A2 A wireless microphone having a split-band audio companding system that provides improved noise reduction and sound quality |
| 06/26/2002 | EP1216602A2 Mems digital-to-acoustic transducer with error cancellation |
| 06/26/2002 | EP1216600A2 Multiple speaker |
| 06/26/2002 | EP1216598A2 Audio signal processing |
| 06/26/2002 | CN1356014A System and method for dual microphone signal noise reduction using spectral substraction |
| 06/26/2002 | CN1086872C Wireless digital communication system, digital speaker, and digital speaker controlling apparatus |
| 06/20/2002 | WO2002049211A2 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 06/20/2002 | WO2002048997A2 Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception |
| 06/20/2002 | WO2002003749A3 Adaptive microphone array system with preserving binaural cues |
| 06/20/2002 | US20020077551 Miniature ultrasound transducer |
| 06/20/2002 | US20020076067 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 06/20/2002 | US20020076065 Volume controller |
| 06/20/2002 | US20020076064 Driver control circuit |
| 06/20/2002 | US20020076037 Echo canceler with automatic gain control of echo cancellation signal |
| 06/20/2002 | US20020075818 Echo canceling system |
| 06/20/2002 | US20020075072 Switching power amplifier |
| 06/19/2002 | EP1016314B1 Process and electric appliance for optimising acoustic signal reception |
| 06/19/2002 | CN1354949A Loudspeaker volume range control |
| 06/18/2002 | US6408079 Distortion removal apparatus, method for determining coefficient for the same, and processing speaker system, multi-processor, and amplifier including the same |
| 06/13/2002 | WO2002047433A2 Loudspeaker systems |
| 06/13/2002 | WO2002047261A1 Playback device for audio signals that are transmitted over potentially disturbed channels |
| 06/13/2002 | WO2001052596A3 A method for analyzing an acoustical environment and a system to do so |
| 06/13/2002 | US20020071578 A/D converter with integrated biasing for a microphone |
| 06/13/2002 | US20020071576 Multiple configuration loudspeaker terminals |
| 06/13/2002 | US20020071548 Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception |
| 06/13/2002 | DE10060296A1 Wiedergabevorrichtung für über potentiell störbehaftete Kanäle übermittelte Audiosignale Reproducing apparatus potentially subject to interference on channels transmitted audio signals |
| 06/13/2002 | DE10058786A1 Verfahren zum Steuerung eines eine akustische Ausgabeeinrichtung aufweisenden Geräts A method for controlling an acoustic output device having device |
| 06/12/2002 | EP1025744B1 Hearing aid comprising an array of microphones |
| 06/12/2002 | CN1353904A Method and apparatus for space-time echo cancellation |
| 06/11/2002 | US6404894 Packaging |
| 06/06/2002 | WO2002045073A2 Systems and methods for controlling a phased array focused ultrasound system |
| 06/06/2002 | WO2002043593A1 Miniature ultrasound transducer |
| 06/06/2002 | WO2001084884A3 Audio system |
| 06/06/2002 | DE10045703A1 Acoustic reproducing apparatus for vehicle has magnetic circuit and suspension unit which are attached to frame |
| 06/05/2002 | EP1210845A1 Modulator processing for a parametric speaker system |
| 06/04/2002 | US6401028 Position guiding method and system using sound changes |
| 06/04/2002 | US6399870 Musical instruments incorporating loudspeakers |
| 05/30/2002 | WO2002043049A1 Method for control of a unit comprising an acoustic output device |
| 05/30/2002 | US20020065650 Method and apparatus for canceling noise in a microphone communications path using an electrical equivalence reference signal |
| 05/30/2002 | US20020064287 Zoom microphone device |
| 05/30/2002 | US20020062695 Sound field measuring apparatus and sound field measuring method |
| 05/29/2002 | EP1208721A1 Improved crossover filters and method |
| 05/29/2002 | CN1351795A Acoustic echo cancellation |
| 05/28/2002 | US6396933 High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 05/28/2002 | US6396872 Unknown system identification method by subband adaptive filters and device thereof |
| 05/23/2002 | WO2002041668A2 A method of and apparatus for producing apparent multidimensional sound |
| 05/23/2002 | WO2002041664A2 Automatically adjusting audio system |
| 05/23/2002 | WO2002032356A8 Transient processing for communication system |
| 05/23/2002 | WO2002003750A3 Improved directional microphone system |
| 05/23/2002 | US20020061109 Audio system |
| 05/23/2002 | US20020060605 Amplifiers |
| 05/23/2002 | DE10054610A1 Verfahren zum Betrieb eines Freisprechers und/oder Lauthörers in einem Mobilfunkendgerät Method for operating a hands-free speaking and / or sound receiver in a mobile radio terminal |
| 05/23/2002 | DE10054033C1 Flat membrane acoustic loudpeaker has 2 exciters connected in series or parallel dependent on frequency via coil and blocking capacitors |
| 05/22/2002 | EP1206896A1 Audio speaker system for personal computer |
| 05/22/2002 | EP0997055B1 Method for electronically selecting the dependency of an output signal from the spatial angle of acoustic signal impingement and hearing aid apparatus |
| 05/22/2002 | EP0903058B1 Electroacoustic transducer |
| 05/22/2002 | CN1350767A Transducer driver |
| 05/21/2002 | US6392476 System and method of producing direct audio from a power supply |
| 05/16/2002 | WO2002039783A1 Directional microphone |
| 05/16/2002 | WO2001091513A3 Method for noise suppression in an adaptive beamformer |
| 05/16/2002 | US20020057815 Hearing aid having switchable first and second order directional responses |
| 05/15/2002 | EP1206161A1 Microphone array with self-adjusting directivity for handsets and hands free kits |
| 05/14/2002 | US6389440 Acoustic feedback correction |
| 05/10/2002 | WO2002037896A1 Portable multi-channel amplifier |
| 05/10/2002 | WO2002037816A2 Method for operating a hands-free system and/or a speakerphone in a mobile radio terminal |
| 05/10/2002 | WO2001091512A3 Directional microphone arrangement and method for signal processing in a directional microphone arrangement |
| 05/10/2002 | WO2001041500A3 Loudspeaker device |
| 05/09/2002 | US20020055913 Signal processing system |
| 05/09/2002 | US20020054687 Sound field forming circuit and sound field forming apparatus |