| Patents for H04R 3 - Circuits for transducers (18,190) |
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| 03/25/2004 | US20040059573 Voice command identifier for a voice recognition system |
| 03/25/2004 | US20040057596 Loudspeaker systems |
| 03/25/2004 | US20040057587 System and method for adjusting the low-frequency response of a crossover that supplies signal to subwoofers in response to main-speaker low-frequency characteristics |
| 03/25/2004 | US20040057586 Voice enhancement system |
| 03/25/2004 | US20040057585 Method and device for signal separation of a mixed signal |
| 03/25/2004 | DE19836997B4 Sende/Empfangs-Schaltkreis und Sende/Empfangs-Verfahren für einen Wandler Transmission / reception circuit and transmission / reception method for a converter |
| 03/24/2004 | EP1401238A1 Sound reproducing system |
| 03/24/2004 | EP1401183A1 Method and device for echo cancellation |
| 03/24/2004 | EP1400814A2 Directional setting apparatus, directional setting system, directional setting method and directional setting program |
| 03/24/2004 | EP1400149A2 Systems and methods for sensing an acoustic signal using microelectromechanical systems technology |
| 03/24/2004 | EP1400097A1 Method for adaptive control of multichannel acoustic echo cancellation system and device therefor |
| 03/24/2004 | EP1234479B1 Loudspeaker device |
| 03/24/2004 | EP0898816B1 Echo suppressor and non-linear processor of echo canceller |
| 03/24/2004 | EP0809900B1 An adaptive noise cancelling arrangement, a noise reduction system and a transceiver |
| 03/23/2004 | CA2257444C Method and apparatus for localization of an acoustic source |
| 03/18/2004 | WO2004023657A2 Method and apparatus for improving characteristics of acoustic and vibration transducers |
| 03/18/2004 | US20040054707 Multiplication coefficient supplement device, multiplication coefficient supplement method, and multiplication factor supplement program |
| 03/18/2004 | US20040051516 Integrated circuit with automatic polarity detection and configuration |
| 03/17/2004 | EP1398993A2 Apparatus and method for feedback compensation in an acoustic amplifcation system, especially in a hearing aid |
| 03/16/2004 | US6708093 Vehicle audio interface adapter |
| 03/16/2004 | US6707919 Driver control circuit |
| 03/16/2004 | US6707910 Detection of the speech activity of a source |
| 03/11/2004 | WO2004021686A2 Telecommunication terminal comprising a memory for storing acoustic effect data |
| 03/11/2004 | WO2004021031A1 Sound source search system |
| 03/11/2004 | WO2003067922A3 Reducing noise in audio systems |
| 03/11/2004 | WO2003015457A3 Sound processing system including forward filter that exhibits arbitrary directivity and gradient response in single wave sound environment |
| 03/11/2004 | WO2003003789A3 Method and apparatus for minimizing latency in digital signal processing systems |
| 03/11/2004 | US20040047479 Speaker system |
| 03/11/2004 | US20040046483 Installation with piezoelectric element for equipping a structure and piezoelectric element for same |
| 03/11/2004 | DE10239588A1 Telekommunikationsendgerät mit einer Speichereinrichtung zur Speicherung von Akustikeffekt-Daten Telecommunications terminal having a memory means for storing acoustic effect data |
| 03/10/2004 | EP1397024A1 Control circuit for small electrodynamic transducers in audio systems depending on the input signal characteristics |
| 03/09/2004 | US6704372 Digital implementation of multi-channel demodulators |
| 03/09/2004 | US6702584 Karaoke device with built-in microphone and microphone therefor |
| 03/04/2004 | WO2004019655A1 Loudspeaker arrangement |
| 03/04/2004 | WO2004019654A1 Automatic wind noise reduction circuit and automatic wind noise reduction method |
| 03/04/2004 | WO2002100287A3 Dental treatment noise suppression |
| 03/04/2004 | US20040042625 Equalization and load correction system and method for audio system |
| 03/04/2004 | DE10237623A1 Lautsprecheranordnung Speaker assembly |
| 03/03/2004 | EP1395080A1 Device and method for filtering electrical signals, in particular acoustic signals |
| 03/03/2004 | EP1393591A2 Automatically adjusting audio system |
| 03/03/2004 | EP1141936B1 Controlled acoustic waveguide for soundproofing |
| 03/03/2004 | EP0962120B1 High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 03/03/2004 | EP0954850B1 Audio processing arrangement with multiple sources |
| 03/03/2004 | CN1479525A Integrated design of omnidirectional camera and microphone array |
| 03/03/2004 | CN1478440A Separation of and used method for transmitting and recieving in ultrasonic scanning |
| 03/03/2004 | CN1141007C 3D sound regeneration equipment for many listeners and its method |
| 03/02/2004 | US6700977 Method and apparatus for cancelling multi-channel echo |
| 02/26/2004 | WO2004017303A1 Method and system for processing subband signals using adaptive filters |
| 02/26/2004 | US20040037439 Acoustic signal processing apparatus and method, and audio device |
| 02/26/2004 | US20040037437 Directional microphone |
| 02/26/2004 | US20040037436 System and process for locating a speaker using 360 degree sound source localization |
| 02/26/2004 | US20040037435 Audiosystem for an automobile |
| 02/26/2004 | US20040037168 Delay network microphones with harmonic nesting |
| 02/26/2004 | US20040037166 Method and apparatus for forming a reception beam |
| 02/26/2004 | DE10237159A1 Drive apparatus for loudspeaker mounted in side part of vehicle, influences reproduction of audio signal based on output from pressure sensor located in side of vehicle |
| 02/26/2004 | DE10236917A1 Electronic apparatus for lights, has light assembly connected to frequency divider crossover network which adjusts brightness and flash in response to current signals from frequency divider crossover network |
| 02/25/2004 | EP1391138A2 Method of generating an electrical output signal and acoustical/electrical conversion system |
| 02/25/2004 | EP1391137A1 Apparatus for electric to acoustic conversion |
| 02/25/2004 | EP1390235A1 Motor vehicle having a number of seats |
| 02/25/2004 | EP0571635B1 Frequency characteristic compensation apparatus |
| 02/25/2004 | CN1477903A Multichannel audio-frequecy system and electronic equipment |
| 02/25/2004 | CN1477731A connection parts for electrical cable |
| 02/24/2004 | US6697493 Process and arrangement for converting an acoustic signal to an electrical signal |
| 02/24/2004 | US6697492 Digital signal processing acoustic speaker system |
| 02/24/2004 | US6696633 Electronic tone generating apparatus and signal-processing-characteristic adjusting method |
| 02/19/2004 | WO2004016040A1 Signal strength information dependent control of small electrodynamic transducers in audio systems |
| 02/19/2004 | WO2004016038A1 Delay network microphones with harmonic nesting |
| 02/19/2004 | WO2004015860A2 Ring triggered mute |
| 02/19/2004 | WO2002078390A3 A method and system for transmitting and/or receiving audio signals with a desired direction |
| 02/19/2004 | WO2002076143A3 Solid angle cross-talk cancellation for beamforming arrays |
| 02/19/2004 | US20040033056 Method of adjusting filter parameters and an associated playback system |
| 02/19/2004 | US20040032960 Multichannel downmixing device |
| 02/19/2004 | US20040032796 System and method for computing a location of an acoustic source |
| 02/18/2004 | EP1389892A2 Sound processing system using distortion limiting techniques |
| 02/18/2004 | CN1475993A Audio frequency data reappear device and method |
| 02/17/2004 | US6694035 System for conveying musical beat information to the hearing impaired |
| 02/17/2004 | US6694028 Microphone array system |
| 02/17/2004 | CA2256485C Superdirective microphone arrays |
| 02/16/2004 | CA2399159A1 Convergence improvement for oversampled subband adaptive filters |
| 02/12/2004 | WO2004014104A2 Electroacoustic transducer with built in transducer circuit |
| 02/12/2004 | US20040028248 Mixing signal-path setting apparatus and program |
| 02/12/2004 | US20040028242 Audio reproducing apparatus and method |
| 02/12/2004 | US20040028240 Speaker system |
| 02/12/2004 | US20040028239 Vehicle accessory microphone assembly having a windscreen with hydrophobic properties |
| 02/12/2004 | US20040028238 System of sound transducers with controllable directional properties |
| 02/12/2004 | US20040027490 Ring triggered mute |
| 02/11/2004 | CN1475094A 定向传声器 Directional microphone |
| 02/11/2004 | CN1474630A Network for distrbuting signal to multiple speakers |
| 02/10/2004 | US6690800 Method and apparatus for communication operator privacy |
| 02/10/2004 | US6690799 Stereo signal processing apparatus |
| 02/10/2004 | US6690790 Receiving section of a telephone with suppression of interference upon switching on/off |
| 02/10/2004 | US6688169 Systems and methods for sensing an acoustic signal using microelectromechanical systems technology |
| 02/05/2004 | WO2004012476A2 Electrical impedance based audio compensation in audio devices and methods therefor |
| 02/05/2004 | WO2004012422A2 Voice controlled system and method |
| 02/05/2004 | WO2004012097A1 Method for fast dynamic estimation of background noise |
| 02/05/2004 | WO2003019775A3 Audio processing device |
| 02/05/2004 | WO2003017716A3 Speaker equalization tool |
| 02/05/2004 | US20040022399 Excursion limiter |
| 02/05/2004 | US20040022397 Microphone array having a second order directional pattern |
| 02/05/2004 | US20040022393 Signal processing system and method |