| Patents for H04R 3 - Circuits for transducers (18,190) | 
|---|
| 04/22/2010 | WO2010043998A1 Microphone system and method of operating the same | 
| 04/22/2010 | DE102008042911A1 Conference system for use with subscriber unit, has multiple subscriber units, where one of subscriber units is configured such that it outputs audio signals of other subscriber unit | 
| 04/21/2010 | EP2178309A2 Method and electronic device for driving a capacitance electro-acoustic transducer | 
| 04/21/2010 | CN201440728U Microphone | 
| 04/21/2010 | CN201440726U Capacitive microphone device | 
| 04/21/2010 | CN201440322U Portable voice-control system and voice-control device thereof | 
| 04/21/2010 | CN201440125U Multifunctional medical residue detecting analyzer | 
| 04/21/2010 | CN101188403B Audio amplification device with adjustable power consumption | 
| 04/20/2010 | US7702408 Extending digital rights management and authentication to audio speakers | 
| 04/20/2010 | US7702118 Electret condenser microphone for noise isolation and electrostatic discharge protection | 
| 04/20/2010 | US7702114 High efficiency audio transducer | 
| 04/20/2010 | US7702112 Intelligibility measurement of audio announcement systems | 
| 04/15/2010 | WO2010042835A2 Multidirectional multisound information system | 
| 04/15/2010 | WO2010041394A1 Acoustic reproduction device | 
| 04/15/2010 | WO2010040370A1 System for picking-up a user's voice | 
| 04/15/2010 | WO2010005597A3 Wireless speaker dongle with auxiliary audio output | 
| 04/15/2010 | WO2009056858A3 Sound projector set-up | 
| 04/15/2010 | US20100092007 Dynamic Switching of Microphone Inputs for Identification of a Direction of a Source of Speech Sounds | 
| 04/15/2010 | DE102006029194B4 Vorrichtung und Verfahren zur Schrittweitensteuerung eines adaptiven Filters Apparatus and method for step control of an adaptive filter | 
| 04/15/2010 | CA2740228A1 Multidirectional multisound information system | 
| 04/14/2010 | CN201438761U Capacitance microphone system | 
| 04/14/2010 | CN201438760U Capacitance microphone device | 
| 04/14/2010 | CN201438754U Network audio digital active loudspeaker | 
| 04/14/2010 | CN201438753U Network audio digital amplifier | 
| 04/14/2010 | CN201438750U Vehicle-mounted recreation system based on wireless communication | 
| 04/14/2010 | CN201438749U Circuit for inhibiting switching noise of audio device | 
| 04/14/2010 | CN201438744U Earphone and corresponding main board | 
| 04/14/2010 | CN201438175U Digital pesticide residue tacheometer | 
| 04/14/2010 | CN101189913B Multi-channel sound reproducing apparatus, and multi-channel sound pickup/reproducing apparatus | 
| 04/13/2010 | US7697702 Condenser microphone | 
| 04/13/2010 | US7697701 Environment adaptable loudspeaker | 
| 04/13/2010 | US7697699 Method of and apparatus for reducing noise | 
| 04/13/2010 | US7697695 Stereophonic sound reproducing system and stereophonic sound reproducing apparatus | 
| 04/08/2010 | WO2010039437A1 Multiple microphone switching and configuration | 
| 04/08/2010 | WO2010039193A2 Multi-display handheld device and supporting system | 
| 04/08/2010 | WO2010038973A2 In-the-ear digital hearing aid which can be controlled wirelessly | 
| 04/08/2010 | US20100086124 Compact Beamforming Microphone Assembly | 
| 04/08/2010 | US20100085379 Effect device, av processing device and program | 
| 04/08/2010 | DE102008050688A1 Kommunikationssystem Communication system | 
| 04/07/2010 | EP2172057A1 Sound reproduction system comprising a loudspeaker enclosure with ports, and associated processing circuit | 
| 04/07/2010 | CN201436819U Wireless sound equipment system with a controller | 
| 04/07/2010 | CN101692717A Down-frequency power supply circuit for directly-heated type electron tube filament | 
| 04/06/2010 | US7693294 Method and system for reducing audible side effects of dynamic current consumption | 
| 04/06/2010 | US7693290 Sound reproduction device | 
| 04/06/2010 | US7693289 Method and apparatus for remote control of an audio source such as a wireless microphone system | 
| 04/01/2010 | WO2010036321A2 Self-steering directional hearing aid and method of operation thereof | 
| 04/01/2010 | WO2010035760A1 Loop gain estimating apparatus and howling preventing apparatus | 
| 04/01/2010 | WO2010035658A1 Signal processing method, signal processing device, and signal processing program | 
| 04/01/2010 | WO2010035657A1 Signal processing method, signal processing device, and signal processing program | 
| 04/01/2010 | WO2010035560A1 Output adjusting circuit, ultrasonic vibration device component, and ultrasonic vibration device | 
| 04/01/2010 | WO2010034874A1 Dual-mode loudspeaker | 
| 04/01/2010 | US20100080404 Drive unit manufacturing method and drive unit | 
| 04/01/2010 | US20100080401 Vehicle Audio System Surround Modes | 
| 03/31/2010 | EP2168396A2 Augmented elliptical microphone array | 
| 03/31/2010 | EP2168363A1 Acoustic echo reduction in mobile terminals | 
| 03/31/2010 | EP2167008A1 Vibrating footwear device and entertainment system for use therewith | 
| 03/31/2010 | CN201435813Y Audio processing device | 
| 03/31/2010 | CN201435801Y Sound box with power supply from USB interface of computer | 
| 03/31/2010 | CN201430870Y Ultrasonic control circuit for mosquito dispeller | 
| 03/31/2010 | CN101690258A Human body sound transmission system and method using single sound source | 
| 03/31/2010 | CN101690257A Screen, control device and method, program and recording medium | 
| 03/31/2010 | CN101690139A Acoustic echo reduction in mobile terminals | 
| 03/31/2010 | CN101686354A Method for automatically adjusting volume and television | 
| 03/31/2010 | CN101686282A Portable device including earphone circuit and operation method using the same | 
| 03/31/2010 | CN101685961A Power supply circuit of audio frequency power amplifier | 
| 03/30/2010 | US7689406 Method and system for measuring a system's transmission quality | 
| 03/30/2010 | US7689305 System for audio-related device communication | 
| 03/30/2010 | US7688989 Method and system for processing sound signals for a surround left channel and a surround right channel | 
| 03/30/2010 | US7688987 Electret microphone buffer circuit with significantly enhanced power supply rejection | 
| 03/30/2010 | US7688986 Loudspeaker system | 
| 03/30/2010 | US7688985 Automatic microphone matching | 
| 03/25/2010 | WO2010033362A2 Hearing assistance device having reduced mechanical feedback | 
| 03/25/2010 | WO2010032463A1 Sound reproducing apparatus | 
| 03/25/2010 | US20100074458 Structure of mems electroacoustic transducer and fabricating method thereof | 
| 03/25/2010 | DE102009041999A1 Headset und Kopfhörer Headset and Headphones | 
| 03/25/2010 | DE102009039423A1 Schaltbarer Kopfhörer Switchable Headphones | 
| 03/24/2010 | EP2166780A1 Vibration device and acoustic system | 
| 03/24/2010 | CN201430685Y Auxiliary device of magnetoelectric induction hearing aid | 
| 03/24/2010 | CN201430684Y Microphone integrated with noise-decreasing function | 
| 03/24/2010 | CN201430680Y Vehicle-mounted DSP digital power amplifier | 
| 03/24/2010 | CN201430673Y Microphone, digital audio signal receiving device and karaoke system | 
| 03/24/2010 | CN101682811A Sound reproducing device using insert-type earphone | 
| 03/24/2010 | CN101682810A Video conference device | 
| 03/24/2010 | CN101682809A Sound discrimination method and apparatus | 
| 03/24/2010 | CN101682808A Acoustic device | 
| 03/24/2010 | CN101682807A Beamforming system comprising a transducer assembly | 
| 03/24/2010 | CN101682366A Sound signal processor and delay time setting method | 
| 03/24/2010 | CN101681663A A device for and a method of processing audio data | 
| 03/24/2010 | CN101681617A Communication apparatus with ambient noise reduction | 
| 03/24/2010 | CN101677421A Loudspeaker and mobile communication terminal with the loudspeaker | 
| 03/23/2010 | US7684571 System and method of generating an audio signal | 
| 03/18/2010 | WO2009155593A3 Electronic stethoscope system | 
| 03/17/2010 | EP2164183A1 Sound signal processor and delay time setting method | 
| 03/17/2010 | EP1410382B1 Method of noise reduction in a hearing aid and hearing aid implementing such a method | 
| 03/17/2010 | CN201426171Y Low-frequency booster | 
| 03/17/2010 | CN201426170Y Control circuit of loudspeaker capable of earphone-plug-in automatic mute | 
| 03/17/2010 | CN201426169Y Headset transfer device | 
| 03/17/2010 | CN201426161Y 耳机 Headphone | 
| 03/17/2010 | CN201426157Y High-intensity sound signal transmitting device | 
| 03/17/2010 | CN201425707Y Device for improving audio frequency playing efficiency |