| Patents for H04R 3 - Circuits for transducers (18,190) |
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| 04/04/2001 | EP1038350A4 Apparatus and methods for enhancing electronic audio signals |
| 04/04/2001 | EP0968472B1 Method and apparatus for computer-assisted extraction of statistically independent digital signals from digital signals |
| 04/04/2001 | CN1290467A Digital and analog directional microphone |
| 04/04/2001 | CN1290114A Microphone circuit with high noise resistance |
| 03/29/2001 | WO2001022772A1 Method and apparatus for treating an audio signal |
| 03/29/2001 | WO2001022577A1 Multiple driver, resonantly-coupled loudspeaker |
| 03/29/2001 | WO2001022576A1 Loudspeaker frequency distribution and adjusting circuit |
| 03/29/2001 | WO2001022404A1 Speech recognition apparatus and consumer electronics system |
| 03/29/2001 | WO2000074350A3 Adaptability to multiple hands-free communication accessories |
| 03/28/2001 | EP1087523A2 Digital graphic equalizer control system and method |
| 03/28/2001 | EP1087214A2 Method and system to detect unwanted noise |
| 03/28/2001 | CN1289522A Speaker device |
| 03/28/2001 | CN1289508A Generating calibration signals for an adaptive beamformer |
| 03/22/2001 | WO2001020948A2 Mems digital-to-acoustic transducer with error cancellation |
| 03/21/2001 | EP1085782A2 Voice control system with a microphone array |
| 03/21/2001 | EP1085781A2 Apparatus for adapting the directional characteristic of microphones for voice control |
| 03/21/2001 | CN1288648A Method and arrangement for voice communication |
| 03/21/2001 | CN1288223A Device adaptive for direction characteristic used for speech voice control |
| 03/21/2001 | CN1288222A Speech voice control system having microphone array |
| 03/20/2001 | CA2241708C Speakerphone and microphone case for the same |
| 03/15/2001 | WO2001019132A1 Improved crossover filters and method |
| 03/15/2001 | WO2001019130A2 Audio signal processing |
| 03/15/2001 | WO2001018786A1 Sound system and method for creating a sound event based on a modeled sound field |
| 03/15/2001 | WO2000057671A3 Method and device for receiving and treating audiosignals in surroundings affected by noise |
| 03/15/2001 | DE19943875A1 System zur Sprachsteuerung mit einem Mikrofonarray System for voice control with a microphone array |
| 03/15/2001 | DE19943872A1 Vorrichtung zur Anpassung der Richtcharakteristik von Mikrofonen für die Sprachsteuerung Device for adjusting the directivity of microphones for voice control |
| 03/15/2001 | CA2384629A1 Audio signal processing |
| 03/15/2001 | CA2382512A1 Improved crossover filters and method |
| 03/14/2001 | CN1287765A Means for bass enhancement in an audio system |
| 03/14/2001 | CN1287764A Audio device and headphone |
| 03/13/2001 | US6201878 Portable compact disc player |
| 03/13/2001 | US6201680 Adjustable high-speed audio transducer protection circuit |
| 03/08/2001 | WO2000072627A3 Transducer driver |
| 03/08/2001 | WO2000072556A9 System and method for near-end talker detection by spectrum analysis |
| 03/07/2001 | EP1081985A2 Microphone array processing system for noisly multipath environments |
| 03/07/2001 | EP1081685A2 System and method for noise reduction using a single microphone |
| 03/07/2001 | EP1080607A1 Band stop filter |
| 03/06/2001 | US6198831 Panel-form loudspeakers |
| 03/01/2001 | WO2001015492A1 Audio speaker system for personal computer |
| 03/01/2001 | WO2001015491A1 Modulator processing for a parametric speaker system |
| 03/01/2001 | WO2001015318A1 Tuned order crossover network for electro-acoustic loudspeakers |
| 03/01/2001 | CA2382986A1 Modulator processing for a parametric speaker system |
| 02/28/2001 | EP1079663A2 Frequency compensation system for planar loudspeakers |
| 02/28/2001 | CA2316074A1 Telephone with sound customizable to audiological profile of user |
| 02/27/2001 | US6195439 Voice signal processor |
| 02/27/2001 | US6194810 Piezoelectric or similar transducer device with an oscillating circuit excitable by a control circuit |
| 02/22/2001 | WO2000056036A3 Echo suppression device and method for performing the same |
| 02/21/2001 | EP1077584A2 Method and device for compensating signal losses |
| 02/21/2001 | EP1077013A1 Method and device for operating voice-controlled systems in motor vehicles |
| 02/21/2001 | EP1076928A1 User adjustable volume control that accommodates hearing |
| 02/21/2001 | CN1285133A Peak to peak signal detector for audio system |
| 02/20/2001 | US6192136 Inertial vibration transducers |
| 02/20/2001 | US6192134 System and method for a monolithic directional microphone array |
| 02/15/2001 | WO2001011918A2 Compensation system and method for sound reproduction |
| 02/14/2001 | EP0760996A4 Multimedia personal computer with active noise reduction and piezo speakers |
| 02/14/2001 | CN1284214A Appts and methods for enhancing electronic audio signals |
| 02/13/2001 | US6188775 Panel-form loudspeakers |
| 02/13/2001 | CA2188536C Multimedia personal computer with active noise reduction and piezo speakers |
| 02/06/2001 | US6183419 Multiplexed array transducers with improved far-field performance |
| 02/01/2001 | WO2001008446A1 Electric signal processing for electroacoustic transducer |
| 02/01/2001 | WO2001008442A2 Method and agc device for controlling the amplification of a microphone with an integrated amplifier with a working point which can be adjusted by external wiring |
| 01/31/2001 | CN1282068A Synchronous device for compressed audio/video frequency signal receiver |
| 01/30/2001 | US6181799 Greetings or the like card |
| 01/30/2001 | US6181796 Method and system which drives left, right, and subwoofer transducers with multichannel amplifier having reduced power supply requirements |
| 01/30/2001 | US6181753 Echo/noise canceler with delay compensation |
| 01/25/2001 | WO2001006809A1 Sound-reproduction device |
| 01/25/2001 | WO2001006475A1 Audio signal sound diffusion system |
| 01/25/2001 | WO2000060901A3 Audio peripheral device comprising usb interface and digital audio mixer |
| 01/25/2001 | DE19934747A1 Microphone amplification control method e.g. for telecommunications and consumer applications |
| 01/24/2001 | EP1071290A2 Synchronizing apparatus for a compressed audio/video signal receiver |
| 01/24/2001 | CN1281628A Mechanical acoustic crossover network and transducer thereof |
| 01/17/2001 | EP1068774A1 Intelligent speaker tuning using non-volatile memory |
| 01/17/2001 | EP1068768A2 Dynamic bass control circuit with variable cut-off frequency |
| 01/17/2001 | EP1068767A1 Microphone and receiver for automatic accompaniment |
| 01/16/2001 | CA2170026C Digitally controlled analog cancellation system |
| 01/11/2001 | WO2001003466A2 Loudspeaker protection system having frequency band selective audio power control |
| 01/11/2001 | DE19938158C1 Acoustic signal loss compensation method for automobile intercom device determines signal transmission path for providing transmission function parameter used for controlling acoustic signal level |
| 01/11/2001 | DE19929429A1 Loudspeaker drive circuit compares coil deflection signal with threshold value; if threshold is exceeded this is extended and reaction parameter formed with which the drive signal is reduced |
| 01/10/2001 | CN1279575A Active loudspeaker |
| 01/09/2001 | US6173058 Sound processing unit |
| 01/04/2001 | WO2001001566A2 Method for processing an audio signal |
| 01/04/2001 | WO2000062462A3 Method for switching signal input based on device capability |
| 01/04/2001 | WO2000059264A3 Optical microphone apparatus |
| 01/03/2001 | EP1065909A2 Noise canceling microphone array |
| 01/03/2001 | EP1064822A1 Method and device for operating a microphone system, especially in a motor vehicle |
| 01/03/2001 | CN1278996A 5-2-5 Matrix encoder and decoder system |
| 12/28/2000 | DE19928420A1 Audio signal processing involves adding band limited, corrected and again band limited audio signal to original audio signal, whereby correction factor is reduced if maximum exceeded |
| 12/27/2000 | EP1063866A1 Digital loudspeaker |
| 12/27/2000 | EP1062839A2 Improved signal localization arrangement |
| 12/26/2000 | US6166315 Device for processing a microphone signal of a karaoke apparatus |
| 12/26/2000 | US6165980 Distamycin derivatives, wherein the distamycin formyl group is substituted by a benzoyl group bearing alkylating group a bis-halo-ethylamino or a n-alkyl-n-haloethyl-amino group, while amidine group is substituted by various nitrogen groups |
| 12/21/2000 | WO2000078094A1 Voice-to-remaining audio (vra) interactive center channel downmix |
| 12/21/2000 | WO2000078093A1 Voice-to-remaining audio (vra) interactive hearing aid & auxiliary equipment |
| 12/21/2000 | CA2374879A1 Voice-to-remaining audio (vra) interactive hearing aid & auxiliary equipment |
| 12/21/2000 | CA2374849A1 Voice-to-remaining audio (vra) interactive center channel downmix |
| 12/20/2000 | EP1061774A2 Audio system having a sound field processor |
| 12/20/2000 | EP1061770A2 Audio apparatus |
| 12/20/2000 | EP1061768A2 Transformer, loudspeaker device and loudspeaker system |
| 12/20/2000 | EP1060470A1 Method and apparatus for distributed, agile calculation of beamforming time delays and apodization values |
| 12/20/2000 | EP1060408A1 Method and apparatus for coherence imaging |