| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 08/28/2007 | US7263373 Sound-based proximity detector |
| 08/28/2007 | US7263184 Method and apparatus for active reduction of speakerphone singing |
| 08/28/2007 | US7263034 Resonator device and circuits for 3-D detection/receiving sonic waves, even of a very low amplitude/frequency, suitable for use in cybernetics |
| 08/23/2007 | WO2007094463A1 Signal distortion removing device, method, program, and recording medium containing the program |
| 08/23/2007 | WO2007094333A1 Acoustic device |
| 08/22/2007 | EP1821569A1 Microphone device |
| 08/22/2007 | EP1493303B1 Microphone assembly with auxiliary analog input |
| 08/22/2007 | CN2938669Y Bass processing circuit |
| 08/22/2007 | CN2938668Y Water-proof auto-control contactless electronic horn of motor-vehicle |
| 08/22/2007 | CN2938667Y Power amplification controller for fire emergency broadcast |
| 08/22/2007 | CN101022682A Method for adjusting gain value of sound signal in gain adjustment system and audio system |
| 08/22/2007 | CN101022678A Osteoacusis multi-sound channel device |
| 08/21/2007 | US7260229 Position sensor for a loudspeaker |
| 08/21/2007 | US7260227 Method and device for measuring sound wave propagation time between loudspeaker and microphone |
| 08/21/2007 | CA2550502C Audio amplifier |
| 08/21/2007 | CA2350444C Procedure and equipment to improve the audio quality in a mobile radio network |
| 08/16/2007 | WO2007074245A3 System for wirelessly distributing an audio signal between a plurality of active loudspeakers |
| 08/16/2007 | WO2007073341A3 Digital feedback to improve the sound reproduction of an electro-dynamic loudspeaker |
| 08/16/2007 | WO2006091335A3 Methods and systems for intelligibility measurement of audio announcement systems |
| 08/16/2007 | US20070189559 Electrostatic Loudspeaker Systems and Methods |
| 08/16/2007 | US20070189554 Audio speaker including impedance matching circuit |
| 08/16/2007 | US20070189548 Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same |
| 08/16/2007 | DE102006003830A1 Umgebungsbeleuchtungseinrichtung Ambient illumination device |
| 08/15/2007 | EP1425934B1 Miniature speaker with integrated signal processing electronics |
| 08/15/2007 | CN2935682Y Active crawler microphone |
| 08/15/2007 | CN101019462A Audio/visual data communication system, audio/visual data transmitting apparatus, and audio/visual data reproducing apparatus |
| 08/15/2007 | CN101017665A Digital audio data playing device with the Kara OK function and its operation method |
| 08/09/2007 | WO2007088730A1 Voice conference device |
| 08/09/2007 | WO2007088663A1 Adapter apparatus |
| 08/09/2007 | WO2006134820A8 Sound reproducing apparatus |
| 08/09/2007 | US20070183618 Moving object equipped with ultra-directional speaker |
| 08/09/2007 | US20070183608 Method and system for processing sound signals |
| 08/09/2007 | US20070180913 Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus |
| 08/09/2007 | DE102006004488A1 Mikrofon Microphone |
| 08/09/2007 | CA2640967A1 Audio conferencing apparatus |
| 08/08/2007 | EP1816892A1 Method and apparatus for protection of the hearing of telephone users |
| 08/08/2007 | CN2932893Y Disc double-speed control device |
| 08/08/2007 | CN1331110C Digita mixer |
| 08/08/2007 | CN101014209A Full band natural sound effect audio directional loudspeaker |
| 08/08/2007 | CN101014208A Audio earphone amplifier |
| 08/08/2007 | CN101014207A Headsets and headset power management |
| 08/08/2007 | CN101013358A Input device |
| 08/07/2007 | US7254368 Audio system and head attachment audio unit |
| 08/07/2007 | US7254242 Acoustic signal processing apparatus and method, and audio device |
| 08/07/2007 | US7254241 System and process for robust sound source localization |
| 08/07/2007 | CA2358085C System for distributing a signal between loudspeaker drivers |
| 08/02/2007 | WO2007086524A1 Electronic device and sound reproducing method |
| 08/02/2007 | WO2007086360A1 Oscillation/echo canceller system |
| 08/02/2007 | WO2007086000A2 Device and method for adapting an audio signal to a transducer unit |
| 08/02/2007 | WO2007085975A2 Sound reproduction |
| 08/02/2007 | DE102006001547A1 Verfahren und Vorrichtung zur Mikrofonüberwachung Method and apparatus for monitoring microphone |
| 08/01/2007 | EP1814358A1 Audio signal processing device and audio signal processing method |
| 08/01/2007 | EP1814356A1 An elastomeric shield for miniature microphones |
| 08/01/2007 | EP1814355A1 Acoustic adjustment device and acoustic adjustment method |
| 08/01/2007 | EP1814277A2 Noise cancelling method and apparatus |
| 08/01/2007 | EP1814108A1 Noise reducing apparatus, method and program and sound pickup apparatus for electronic equipment |
| 08/01/2007 | EP1404148B1 Howling control device and howling control method |
| 08/01/2007 | EP1219134A4 Method and apparatus for treating an audio signal |
| 08/01/2007 | EP1017250B1 Sound reproducing device |
| 08/01/2007 | CN2930173Y Electric vehicle horn |
| 08/01/2007 | CN101010986A Audio reproducing system |
| 08/01/2007 | CN101010981A Audio/visual apparatus with ultrasound |
| 08/01/2007 | CN101009954A Audio reproducing apparatus and method |
| 08/01/2007 | CN101009950A A continuous-processing blind separation device for the mixed audio |
| 08/01/2007 | CN101009792A Image display device and method and program |
| 07/31/2007 | US7251336 Acoustic talker localization |
| 07/31/2007 | US7251333 Method and apparatus for creating a virtual third channel in a two-channel amplifier |
| 07/31/2007 | US7249511 Method of detecting resonant frequency, method of selecting resonance frequency, and device for detecting resonant frequency sensor |
| 07/26/2007 | WO2007083201A1 A device for and a method of processing an audio data stream |
| 07/26/2007 | WO2007082388A1 Power supply for limited power sources and audio amplifier using power supply |
| 07/26/2007 | US20070172080 Acoustic feedback suppression |
| 07/26/2007 | US20070172079 Handsfree communication system |
| 07/26/2007 | US20070172078 Device for localizing acoustic sources and measuring their intensities |
| 07/26/2007 | US20070172076 Moving object equipped with ultra-directional speaker |
| 07/26/2007 | CA2635629A1 Power supply for limited power sources and audio amplifier using power supply |
| 07/25/2007 | CN101006747A Low frequency phase matching for microphones |
| 07/25/2007 | CN101005587A Method for providing information on digital TV receiver |
| 07/25/2007 | CN101005279A Suppression circuit for sound noise |
| 07/24/2007 | US7248708 Noise canceling microphone |
| 07/19/2007 | WO2007081916A2 System and method for utilizing inter-microphone level differences for speech enhancement |
| 07/19/2007 | WO2007080879A1 Audio signal processing device |
| 07/19/2007 | US20070165893 Howling margin measuring device |
| 07/19/2007 | US20070165882 Adjustable rephase device for compression drivers and direct emission dome-shaped loudspeakers |
| 07/19/2007 | US20070165879 Dual Microphone System and Method for Enhancing Voice Quality |
| 07/19/2007 | US20070165878 Loudspeaker array audio signal supply apparartus |
| 07/19/2007 | US20070165876 Sound device provided with a geometric and electronic radiation control |
| 07/19/2007 | US20070165874 Method and apparatus for spatially enhancing the stereo image in sound reproduction and reinforcement systems |
| 07/19/2007 | US20070165871 Audio system having reverberation reducing filter |
| 07/19/2007 | DE102006001730A1 Beschallungsanlage, Verfahren zur Verbesserung der Sprachqualität und/oder Verständlichkeit von Sprachdurchsagen sowie Computerprogramm PA System, method for improving the speech quality and / or intelligibility of voice announcements and computer program |
| 07/18/2007 | CN101001481A Apparatus and method of reducing noise of earphones, noise reducing earphones, and a portable audio reproducing apparatus |
| 07/18/2007 | CN100998532A Noise preventing earmuff based on small wave analysis |
| 07/17/2007 | US7246059 Method for fast dynamic estimation of background noise |
| 07/17/2007 | US7245909 Telephony control in the flight deck |
| 07/17/2007 | US7245728 Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics |
| 07/17/2007 | US7245726 Noise canceling microphone system and method for designing the same |
| 07/17/2007 | CA2344823C Method for in-situ measuring and correcting or adjusting the output signal of a hearing aid with a model processor and hearing aid employing such a method |
| 07/12/2007 | WO2007077534A1 Sound device with informative sound signal |
| 07/12/2007 | WO2007076575A1 Media data synchronization in a wireless network |
| 07/12/2007 | US20070160258 Vibrating plate for electricity-sound transformer and method for producing the same, and electricity-sound transformer and equipment using the same |
| 07/12/2007 | US20070160237 Amplifier apparatus and acoustic system |