| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 07/12/2001 | DE19963217A1 Differenzdruckmikrofon Differential pressure microphone |
| 07/12/2001 | CA2396347A1 Piezoelectric film sonic emitter |
| 07/11/2001 | EP1115266A1 Sound-reproduction device |
| 07/11/2001 | CN1303180A Method of reducing echo and/or noise |
| 07/10/2001 | US6259935 Electro-mechanical-acoustic transducing device |
| 07/10/2001 | US6259799 Speaker system |
| 07/05/2001 | WO2000076176A3 Loudspeaker volume range control |
| 07/05/2001 | WO2000072564A3 Echo compensation device |
| 07/05/2001 | US20010006511 Process for coordinated echo- and/or noise reduction |
| 07/04/2001 | EP1113702A2 Acoustic dipole radiator for portable electronic devices |
| 07/04/2001 | EP1113701A2 Differential-pressure microphone |
| 07/04/2001 | EP1113582A2 Wireless microphone apparatus and transmitter device for wireless microphone |
| 07/04/2001 | CN1302057A Pressure gradient microphone |
| 07/03/2001 | US6256394 Transmission system for correlated signals |
| 06/28/2001 | US20010005418 Differential-pressure microphone |
| 06/27/2001 | EP1110427A2 Low-frequency audio enhancement system |
| 06/26/2001 | US6252969 Howling detection and prevention circuit and a loudspeaker system employing the same |
| 06/21/2001 | WO2001045375A1 Real time processing and management method for canceling out the echo between a loudspeaker and a microphone of a computer terminal |
| 06/20/2001 | EP1109421A2 Digital self-adapting graphic equalizer and method |
| 06/20/2001 | EP1109420A2 Speaker system with enhanced bass response |
| 06/20/2001 | CN1300175A Radio remote control system with microphone/loud speaker for Internet apparatus and method for controlling its telecontroller |
| 06/19/2001 | US6249158 Circuit arrangement for generating an output signal |
| 06/14/2001 | WO2001043413A1 Echo canceller in a communication system at a terminal |
| 06/14/2001 | WO2001015318A8 Tuned order crossover network for electro-acoustic loudspeakers |
| 06/14/2001 | US20010003541 Speaker system |
| 06/14/2001 | CA2394370A1 Echo canceller in a communication system at a terminal |
| 06/13/2001 | EP1107640A2 Device for creating harmonics in an audio signal |
| 06/13/2001 | DE19955696A1 Vorrichtung zur Erzeugung von Oberwellen in einem Audiosignal An apparatus for generating harmonics in an audio signal |
| 06/13/2001 | DE19861018C2 Gesteuerter akustischer Wellenleiter zur Schalldämpfung Controlled acoustic waveguide for sound attenuation |
| 06/07/2001 | WO2001041500A2 Loudspeaker device |
| 06/07/2001 | WO2001041499A2 Method and device for improving communication in a vehicle |
| 06/07/2001 | CA2391797A1 Method and device for improving communication in a vehicle |
| 06/05/2001 | US6243473 Laptop computer with loudspeaker(s) |
| 06/05/2001 | US6243322 Method for estimating the distance of an acoustic signal |
| 05/31/2001 | WO2001039543A1 Earphone having microphone function, and full-duplex audio communication circuit using the same |
| 05/31/2001 | WO2001039371A1 Audio boost circuit |
| 05/31/2001 | WO2001039370A2 Signal processing system and method |
| 05/31/2001 | DE19958836A1 In car communication system has individual microphones and loudspeakers allows easy conversation |
| 05/31/2001 | DE19957221A1 Exponentielle Echo- und Geräuschabsenkung in Sprachpausen Exponential echo and noise reduction in speech pauses |
| 05/30/2001 | EP1103956A2 Exponential reduction of echo and noise during speech pauses |
| 05/30/2001 | CN1297322A Combined electret pick-up with high noise resistance |
| 05/29/2001 | US6239348 Sound system and method for creating a sound event based on a modeled sound field |
| 05/29/2001 | CA2204880C Noise cancellation apparatus |
| 05/25/2001 | WO2001037610A1 Anti-noise pickup |
| 05/25/2001 | WO2001037519A2 Vehicle accessory microphone |
| 05/25/2001 | WO2001037499A1 Light controlling apparatus |
| 05/25/2001 | WO2001037435A2 Super directional beamforming design and implementation |
| 05/25/2001 | CA2391391A1 Anti-noise pickup |
| 05/25/2001 | CA2387797A1 Super directional beamforming design and implementation |
| 05/23/2001 | EP1100628A2 Off-aperture electrical connection for ultrasonic transducer |
| 05/23/2001 | CN1296722A Band stop filter |
| 05/22/2001 | US6236725 Echo canceler employing multiple step gains |
| 05/17/2001 | WO2001035118A1 Method to determine whether an acoustic source is near or far from a pair of microphones |
| 05/17/2001 | WO2001003466A3 Loudspeaker protection system having frequency band selective audio power control |
| 05/17/2001 | WO2000033634A3 Method for providing the transmission characteristics of a microphone arrangement and microphone arrangement |
| 05/17/2001 | DE19948336A1 Anordnung zum Ankoppeln eines Treibers an eine Ankoppelstelle der Ossikelkette Arrangement for coupling a driver to a coupling point of the ossicular chain |
| 05/16/2001 | EP0943225B1 Power supply for microphone |
| 05/16/2001 | CN1295735A Capacitor-less crossover network for electro-acoustic loudspeakers |
| 05/15/2001 | US6233548 Method and apparatus for performing level compensation for an input signal |
| 05/15/2001 | US6233343 Power adapter having a speaker for an electronic device |
| 05/15/2001 | CA2250810C Six-axis surround sound processor with improved matrix and cancellation control |
| 05/10/2001 | WO2001033902A2 Parametric loudspeaker with improved phase characteristics |
| 05/10/2001 | CA2389172A1 Parametric loudspeaker with improved phase characteristics |
| 05/09/2001 | EP1098548A2 Acoustic system comprised of components connected by wireless |
| 05/09/2001 | EP1097510A1 Capacitor-less crossover network for electro-acoustic loudspeakers |
| 05/08/2001 | US6229899 Method and device for developing a virtual speaker distant from the sound source |
| 05/03/2001 | DE19951406A1 Lautsprecherkombination Speaker combination |
| 05/02/2001 | EP1095538A2 Audio peripheral device comprising usb interface and digital audio mixer |
| 05/02/2001 | CN1065378C Bass enhancement circuit |
| 05/01/2001 | US6226386 Microphone |
| 05/01/2001 | CA2208942C Sub-band echo canceller using optimum wavelet packets and cross-band cancellation |
| 04/25/2001 | EP1094687A2 Device for mechanical coupling of a driver to a coupling part of the ossicullar chain |
| 04/25/2001 | CN1292985A Improved signal localization arrangement |
| 04/24/2001 | US6222928 Universal impedance matcher for a microphone-to-radio connection |
| 04/24/2001 | CA2090297C Adaptive noise reduction circuit for a sound reproduction system |
| 04/19/2001 | WO2001028287A1 Optical microphone portable telephone |
| 04/19/2001 | WO2001028285A1 Video camera with microphone |
| 04/19/2001 | WO2001028284A1 Sound-collecting device |
| 04/19/2001 | WO2001028283A1 Sound collector |
| 04/19/2001 | WO2001028282A1 Sound-collecting device |
| 04/19/2001 | WO2001028281A1 Directional optical microphone |
| 04/19/2001 | WO2001028279A1 Speaker device |
| 04/19/2001 | DE19934724A1 Verfahren und Einrichtung zum Aufnehmen und Bearbeiten von Audiosignalen in einer störschallerfüllten Umgebung Method and apparatus for recording and editing of audio signals in a störschallerfüllten environment |
| 04/19/2001 | CA2355216A1 Speaker device |
| 04/18/2001 | EP1093220A1 Method of anomalous offset detection and circuit |
| 04/18/2001 | CN1292095A Method and apparatus for coherence imaging |
| 04/17/2001 | US6218883 Semiconductor integrated circuit for electric microphone |
| 04/13/2001 | CA2323533A1 A silenceable speaker with pre-announce tone detection |
| 04/12/2001 | WO2001026416A2 High performance audio transmission channel |
| 04/12/2001 | WO2001026415A1 Method and apparatus for picking up sound |
| 04/12/2001 | WO2001026412A2 Multiple speaker |
| 04/12/2001 | CA2386584A1 Method and apparatus for picking up sound |
| 04/11/2001 | EP1091615A1 Method and apparatus for picking up sound |
| 04/11/2001 | EP1091539A2 A portable electronic device |
| 04/11/2001 | EP1091534A1 High efficiency transmission channel |
| 04/11/2001 | EP0809841B1 Voice activity detection |
| 04/10/2001 | US6215883 Loudspeaker with movable virtual point source |
| 04/10/2001 | US6215881 Ceiling tile loudspeaker |
| 04/05/2001 | WO2001023104A2 Method and apparatus to direct sound using an array of output transducers |
| 04/04/2001 | EP1089526A2 Telephone with sound customizable to audiological profile of user |