| Patents for H04R 3 - Circuits for transducers (18,190) | 
|---|
| 11/23/2011 | CN202050532U Digital audio distributor | 
| 11/23/2011 | CN202044746U Audio vitality board/skateboard | 
| 11/23/2011 | CN1883228B Array speaker device | 
| 11/23/2011 | CN1822709B Echo eliminating system for microphone echo | 
| 11/23/2011 | CN102257728A Audio signal adjustment device and audio signal adjustment method | 
| 11/23/2011 | CN102257561A Speech signal processing | 
| 11/23/2011 | CN102256194A Sound device with alternating current filter | 
| 11/23/2011 | CN102256193A Audio signal receiving device and audio signal transmission system | 
| 11/23/2011 | CN102256192A Individualization of sound signals | 
| 11/23/2011 | CN101411063B Filter adaptive frequency resolution | 
| 11/23/2011 | CN101326853B Device for and method of processing an audio data stream | 
| 11/23/2011 | CN101170302B Audio processing method and audio processing apparatus | 
| 11/23/2011 | CN101052242B Method for automatically equalizing a sound system | 
| 11/22/2011 | US8064747 Reproducing device and reproducing method | 
| 11/22/2011 | US8064622 Self-biased amplifier device for an electrecret microphone | 
| 11/22/2011 | US8064620 Driver circuit and driving method for electrostatic loudspeaker | 
| 11/22/2011 | US8064619 Microphone and integrated circuit capible of echo cancellation | 
| 11/22/2011 | US8064618 Direction detection apparatus, direction detection method and direction detection program, and direction control apparatus, direction control method, and direction control program | 
| 11/22/2011 | US8064617 Microphone non-uniformity compensation system | 
| 11/22/2011 | CA2496785C Sound source search system | 
| 11/22/2011 | CA2422449C Method for controlling a transmission system, use of this method, transmission system, receiving unit and hearing aid | 
| 11/17/2011 | US20110282660 System for Suppressing Rain Noise | 
| 11/17/2011 | DE102010011730A1 Hörvorrichtung und Verfahren zum Erzeugen einer omnidirektionalen Richtcharakteristik Hearing apparatus and method for generating an omnidirectional polar pattern | 
| 11/16/2011 | EP2387251A1 Sound reproduction and detection | 
| 11/16/2011 | EP2387032A1 Noise cancellation device and noise cancellation program | 
| 11/16/2011 | EP2386943A1 Control device, method, and program | 
| 11/16/2011 | CN202043273U Power amplifier board | 
| 11/16/2011 | CN202043264U Frequency modulation wireless microphone circuit with voltage stabilizing circuit | 
| 11/16/2011 | CN202041959U International express clearance RFID (radio frequency identification) voice reporting system | 
| 11/16/2011 | CN102246230A Systems and methods for improving the intelligibility of speech in a noisy environment | 
| 11/16/2011 | CN102244828A Guitar sound box | 
| 11/16/2011 | CN101427930B Method for improving doppler sound quality for colorful ultrasonic system | 
| 11/16/2011 | CN101222786B Sound outputting apparatus, sound outputting method, sound output processing program and system | 
| 11/15/2011 | US8059840 System and method for locating sound sources | 
| 11/15/2011 | US8059838 Interfacing circuit for a removable microphone | 
| 11/15/2011 | US8059837 Audio processing method and system | 
| 11/15/2011 | US8059836 Microphone bias circuits | 
| 11/15/2011 | US8059828 Audio privacy method and system | 
| 11/10/2011 | WO2011137852A1 Method and apparatus for estimating interchannel delay of sound signal | 
| 11/10/2011 | US20110275434 Methods for controlling a process of a game and electronic devices utilizing the same | 
| 11/10/2011 | US20110275350 Method of Simulating Communication | 
| 11/10/2011 | US20110274289 Sensor array beamformer post-processor | 
| 11/10/2011 | DE102010019390A1 Circuit arrangement for suppression of electromagnetic spurious signals in e.g. compact disk player, has circuit portion formed by planar, single-piece, meander-shaped metal element i.e. metal sheet, or unilaterally connected capacitors | 
| 11/09/2011 | EP2385711A1 Howling suppressing apparatus, howling suppressing method, program, and integrated circuit | 
| 11/09/2011 | CN202026876U Digital, intelligent and rhythmic luminous pattern device | 
| 11/09/2011 | CN102239706A Acoustic system | 
| 11/09/2011 | CN102239705A Wind noise detection method and system | 
| 11/09/2011 | CN102238457A Signal dereverberation using environment information | 
| 11/09/2011 | CN102238456A Signal processing device, signal processing method and program | 
| 11/09/2011 | CN102238455A Sound sensor with electromagnetic wave receiver | 
| 11/09/2011 | CN102238454A ECM (electret condenser microphone) switching circuit and method | 
| 11/09/2011 | CN102238452A Method for actively resisting noises in hands-free earphone and hands-free earphone | 
| 11/08/2011 | US8054996 Video/audio output device and external speaker control apparatus | 
| 11/08/2011 | US8054992 High frequency compensating | 
| 11/08/2011 | US8054991 Sound pickup apparatus and conference telephone | 
| 11/08/2011 | US8054990 Method of recognizing speech from a plurality of speaking locations within a vehicle | 
| 11/08/2011 | US8054988 Communications device for transmitting acoustic signals in a motor vehicle | 
| 11/03/2011 | WO2011135646A1 Speaker device and filter coefficient generation device therefor | 
| 11/03/2011 | WO2011134243A1 Microphone circuit in two-mode two-standby mobile terminal and implementing method thereof | 
| 11/03/2011 | WO2011134212A1 Terminal and voice input method | 
| 11/03/2011 | US20110268292 Apparatus | 
| 11/02/2011 | EP2384024A2 Handset Leak-Tolerant Receiver | 
| 11/02/2011 | EP2384023A1 Using a loudspeaker as a vibration sensor | 
| 11/02/2011 | EP2382802A2 Method of and apparatus for planar audio source tracking | 
| 11/02/2011 | EP2382799A1 Speech capturing and speech rendering | 
| 11/02/2011 | EP2382798A1 Elevated toroid microphone apparatus and method | 
| 11/02/2011 | EP1699259B1 Audio output apparatus | 
| 11/02/2011 | CN202019795U Barrier prompt scarf | 
| 11/02/2011 | CN101795427B Bidimensional cruciate sound column with controllable directive property | 
| 11/02/2011 | CN101247671B Optimal estimation of transducer parameters | 
| 11/02/2011 | CN101184345B Noise reducing device, noise reducing method, noise reducing program, and noise reducing audio outputting device | 
| 11/01/2011 | US8050931 Sound masking system and masking sound generation method | 
| 11/01/2011 | US8050717 Signal processing system and method for calibrating channel signals supplied from an array of sensors having different operating characteristics | 
| 11/01/2011 | US8050432 Sound system | 
| 11/01/2011 | US8050425 Audio signal supplying device, parameter providing system, television set, AV system, speaker apparatus, and audio signal supplying method | 
| 11/01/2011 | CA2653922C Methods and apparatus for processing audio signals | 
| 10/27/2011 | WO2011132845A2 Ear microphone | 
| 10/27/2011 | US20110261973 Apparatus and method for reproducing a sound field with a loudspeaker array controlled via a control volume | 
| 10/27/2011 | DE102010017959A1 Microphone e.g. micro-electromechanical system (MEMS) microphone for use in mobile communication apparatus, has membrane and back plate between which variable electrical bias is produced by bias generation unit | 
| 10/26/2011 | EP2380164A1 Speech signal processing | 
| 10/26/2011 | EP2208364B1 Noise cancellation circuit for electronic device | 
| 10/26/2011 | EP1876706B1 Acoustic reproduction device | 
| 10/26/2011 | CN202019443U Electromagnetic radiation reducing circuit | 
| 10/26/2011 | CN202019442U Digital sound source circuit control device | 
| 10/26/2011 | CN202019430U Digital high-fidelity multi-channel microphone system | 
| 10/26/2011 | CN202016626U Talking chocolate box | 
| 10/26/2011 | CN1682444B Integrated circuit with automatic polarity detection and configuration | 
| 10/26/2011 | CN102227918A Sound collection device | 
| 10/26/2011 | CN102227768A Noise cancellation device and noise cancellation program | 
| 10/26/2011 | CN101267686B Speaker array apparatus and signal processing method therefor | 
| 10/25/2011 | US8045840 Video-audio recording apparatus and method, and video-audio reproducing apparatus and method | 
| 10/25/2011 | US8045735 Ultrasonic transducer and ultrasonic speaker using the same | 
| 10/25/2011 | US8045730 Methods and systems for reducing acoustic echoes in communication systems | 
| 10/25/2011 | US8045701 Method and apparatus for active reduction of speakerphone singing | 
| 10/20/2011 | US20110255709 Audio control device and audio output device | 
| 10/19/2011 | EP2378795A1 Sound field correction system | 
| 10/19/2011 | EP2378790A1 Loudspeaker system and sound emission/collection method | 
| 10/19/2011 | EP2378788A2 Device and method for in-ear sound generation | 
| 10/19/2011 | EP1730993B1 Listening device with two or more microphones | 
| 10/19/2011 | EP1419672B1 Listening device |