| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 10/14/2004 | US20040202336 Vehicle accessory microphone having mechanism for reducing line-induced noise |
| 10/14/2004 | US20040201056 Audio signal processing circuit and a display device incorporating the same |
| 10/13/2004 | EP1466499A1 Sound effects microphone |
| 10/13/2004 | EP1466498A1 Audio system based on at least second; order eigenbeams |
| 10/13/2004 | EP1466497A1 Echo-eliminating microphone |
| 10/13/2004 | EP1466407A2 Modulator- amplifier |
| 10/13/2004 | EP1273100B1 Balanced circuit arrangement |
| 10/13/2004 | CN1171185C Vibrator and method of controlling vibrator |
| 10/13/2004 | CN1170705C Built-in device of vehicles, and monitoring apparatus |
| 10/07/2004 | WO2004086814A1 Echo prevention circuit |
| 10/07/2004 | WO2004086813A1 Volume control method and system |
| 10/07/2004 | WO2004086810A2 Vocal pitch-training device |
| 10/07/2004 | WO2004086555A2 Multi-band omni directional antenna |
| 10/07/2004 | US20040196990 Phantom powered capacitor microphone and a method of using a vacuum tube in the same |
| 10/07/2004 | US20040196986 Rapidly optimized wireless microphone system and method for controlling thereof |
| 10/07/2004 | US20040195854 Motor vehicle having a number of seats |
| 10/07/2004 | US20040194610 Vocal pitch-training device |
| 10/06/2004 | EP1465452A2 Narrow opening electroacoustical transducing |
| 10/06/2004 | EP1465159A1 Virtual microphone array |
| 10/06/2004 | EP1464967A2 Potential fixing device and potential fixing method |
| 10/06/2004 | EP1464048A1 Translation device with planar microphone array |
| 10/06/2004 | EP1269624A4 System and method of producing direct audio from a power supply |
| 10/06/2004 | CN1535555A Cardioid beam with desired null based acoustic devices, system and method |
| 10/06/2004 | CN1535034A System and method for improving sound quality of multifunctional equipment of mobile communication terminal |
| 10/06/2004 | CN1535013A Method of forming digital film content according to audience's tolerance standard |
| 10/06/2004 | CN1170456C Loudspeaker voltage doubler circuit |
| 10/05/2004 | US6801635 Speaker device |
| 10/05/2004 | US6801632 Microphone assembly for vehicular installation |
| 10/05/2004 | US6801631 Speaker system with multiple transducers positioned in a plane for optimum acoustic radiation pattern |
| 10/05/2004 | US6801158 Annunciation of the distance to a target position in a global positioning system landing system |
| 09/30/2004 | WO2004084580A1 Condenser microphone employing wide band stop filter and having improved resistance to electrostatic discharge |
| 09/30/2004 | WO2004084577A1 Circular microphone array for multi channel audio recording |
| 09/30/2004 | WO2004083884A2 Method and device for segregating acoustic signals |
| 09/30/2004 | WO2004082692A1 Actacid composition |
| 09/30/2004 | US20040194128 Method for providing digital cinema content based upon audience metrics |
| 09/30/2004 | US20040193052 Ultrasonic transmitting and receiving apparatus and ultrasonic transmitting and receiving method |
| 09/30/2004 | US20040192421 Electronic apparatus |
| 09/30/2004 | US20040192210 System and method for improving sound quality of an MFD in a mobile communication terminal |
| 09/30/2004 | US20040190747 Magnetic shielding of loud speaker sensing coil |
| 09/30/2004 | US20040190731 Adaptive feedback canceller |
| 09/30/2004 | US20040190730 System and process for time delay estimation in the presence of correlated noise and reverberation |
| 09/30/2004 | US20040189557 Array driving system and method of driving loads |
| 09/30/2004 | DE202004010025U1 Hybrid-Kapazitätsmodul für ein Auto-Audiosystem Hybrid capacity module for a car audio system |
| 09/30/2004 | DE10049355B4 Mikrofonfilter und Mikrofoneinheit Microphone and microphone filter unit |
| 09/30/2004 | CA2462322A1 Adaptive feedback canceller |
| 09/29/2004 | EP1463378A2 Method for determining the direction of incidence of a signal of an acoustic source and device for carrying out the method |
| 09/29/2004 | EP1463373A1 Earphone detection circuit |
| 09/29/2004 | EP1463317A2 Method for providing digital cinema content based upon audience metrics |
| 09/29/2004 | EP1463277A2 System and method for improving sound quality of a multifunction device MFD in a mobile communication terminal |
| 09/29/2004 | EP1462819A2 Ultrasonic imaging apparatus with multiple transmit beams and reduced sidelobes |
| 09/29/2004 | EP1461946A2 A method and apparatus for performing real-time storage of ultrasound video image information |
| 09/29/2004 | EP1196907B1 Audio signal sound diffusion system |
| 09/29/2004 | CN2645389Y 智能化数码话筒 Intelligent Digital Microphone |
| 09/29/2004 | CN2645177Y Sound box with microphone |
| 09/29/2004 | CN1533217A Digita mixer |
| 09/29/2004 | CN1169288C Electronic volume circuit |
| 09/28/2004 | US6798887 Key click masker and method for masking key clicks |
| 09/28/2004 | US6798369 Precision, wide band pulse width modulator for digital to analog conversion |
| 09/28/2004 | CA2456496A1 Method for providing digital cinema content based upon audience metrics |
| 09/23/2004 | WO2004082330A1 Loudspeaker equipped with measurement of the movement of the loudspeaker unit and a method for measuring the movement of the loudspeaker unit in a loudspeaker |
| 09/23/2004 | WO2004082324A2 Transducer asembly with modifiable buffer circuit and method for adjusting thereof |
| 09/23/2004 | WO2004082322A2 Apparatus and method of limiting power applied to a loudspeaker |
| 09/23/2004 | WO2004082321A2 Multi-channel digital feedback reducer system |
| 09/23/2004 | US20040185804 Microphone device and audio player |
| 09/23/2004 | US20040184626 Digital mixer |
| 09/23/2004 | US20040184623 Speaker unit with active leak compensation |
| 09/23/2004 | US20040184349 Parameter display controller for an acoustic signal processing apparatus |
| 09/23/2004 | US20040183728 Multi-Band Omni Directional Antenna |
| 09/22/2004 | EP1460786A2 Digital mixer |
| 09/22/2004 | EP1459510A1 Echo canceller having spectral echo tail estimator |
| 09/22/2004 | EP1459292A1 Method and device arrangement to improve quality of sound in an audio system |
| 09/22/2004 | EP1304016B1 A/d converter with integrated biasing for a microphone |
| 09/22/2004 | EP0963682B1 Six-axis surround sound processor with improved matrix and cancellation control |
| 09/22/2004 | CN2643589Y A capacitance resistance coupling frequency-divider for treble |
| 09/22/2004 | CN2643584Y Small sized outdoor metal-shell intelligent column |
| 09/22/2004 | CN1530929A System for inhibitting wind noise |
| 09/22/2004 | CN1530928A System for inhibitting wind noise |
| 09/22/2004 | CN1530898A Sound signal processor |
| 09/22/2004 | CN1168350C Digital electroacoustic transducer |
| 09/22/2004 | CN1168342C Complex sound exciter drive circuit and portable information terminal |
| 09/21/2004 | US6795560 Digital mixer and digital mixing method |
| 09/21/2004 | US6795558 Microphone array apparatus |
| 09/16/2004 | WO2004080117A1 Howling suppression device and howling suppression method |
| 09/16/2004 | WO2004080116A2 Speaker unit with active leak compensation |
| 09/16/2004 | WO2004079901A2 Digital filter and listening device |
| 09/16/2004 | WO2004064444A3 Audio speaker crossover having two or more filter housings |
| 09/16/2004 | US20040181301 Sound information output control circuit and display unit provided with same |
| 09/16/2004 | US20040179704 Sound control system |
| 09/16/2004 | US20040179703 Modifiable buffer circuit for miniature microphone applications and method of adjusting thereof |
| 09/16/2004 | US20040179702 Transducer assembly with modifiable buffer circuit and method for adjusting thereof |
| 09/16/2004 | US20040179695 Audio signal processing device |
| 09/16/2004 | US20040179387 Multi-channel digital feedback reducer system |
| 09/16/2004 | US20040178852 Apparatus and method of limiting power applied to a loudspeaker |
| 09/16/2004 | DE10236307A9 Schaltung zur Korrektur der akustischen Gruppenlaufzeit und des frequenzabhängigen Phasenverhaltens für Schallwandler Circuit for correcting the acoustic group delay and the frequency-dependent phase behavior of the transducers |
| 09/15/2004 | EP1390235B1 Motor vehicle having a number of seats |
| 09/15/2004 | EP1129600B1 Method for in-situ measuring and in-situ correcting or adjusting a signal process in a hearing aid with a reference signal processor |
| 09/15/2004 | EP1004204B1 Videoconferencing system with audio source location |
| 09/15/2004 | CN2641964Y Self programing, frequency selectinga nd pulse width selecting device for driving automobile electrical horn |
| 09/15/2004 | CN1529528A Multi sampling rate array signal noise-removing method |
| 09/14/2004 | US6792122 Acoustic device |