Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 19 - Electrostatic transducers
Patents for H04R 19 - Electrostatic transducers (5,387)
05/2010
05/26/2010CN201491258U Back-pole electro-acoustic actuator with equal air-pressure electret and two vibration films
05/26/2010CN1784084B Microphone and its producing method
05/26/2010CN101715159A loudspeaker
05/19/2010EP2187657A1 Digital speaker driving device
05/19/2010EP2186352A1 Condenser microphone using the ceramic package whose inside is encompassed by metal or conductive materials
05/19/2010CN201479369U Diaphragm assembling positioner
05/19/2010CN201479364U Miniature capacitor microphone
05/19/2010CN201479363U Capacitor type microphone
05/19/2010CN201479362U Electret capacitance microphone
05/18/2010US7720239 Capacitor microphone with acoustic resistor
05/14/2010WO2010052720A1 An earpiece and a method for playing a stereo and a mono signal
05/14/2010WO2010051707A1 Silicon microphone
05/13/2010US20100119099 Microphone and Method for Transmitting the Microphone Audio Data
05/13/2010US20100119088 Capacitive Microphone With Integrated Cavity
05/12/2010CN201467442U Capacitor microphone
05/12/2010CN201467441U Encapsulating structure of MEMS microphone
05/12/2010CN201467440U Encapsulating structure of MEMS microphone
05/12/2010CN201467439U Electret capacitance type microphone with improved integral vocal cavity component
05/12/2010CN201467438U High-fidelity static sound box
05/12/2010CN201467393U Combined polarising sheet for mini-type microphone
05/12/2010CN1674444B 电荷泵电路 The charge pump circuit
05/06/2010WO2010048833A1 Silicon capacitor microphone
05/06/2010US20100111345 Miniature stylish noise and wind canceling microphone housing, providing enchanced speech recognition performance for wirless headsets
05/05/2010EP2182738A1 Electrostatic capacitive vibrating sensor
05/05/2010EP2182737A1 Electronic device with electret electro-acoustic transducer
05/05/2010CN201450592U Miniature microphone with circuit board frame structure
05/05/2010CN101702787A Waterproof microphone
05/04/2010US7710371 Variable volume between flexible structure and support surface
04/2010
04/29/2010WO2010047076A1 Electret electrode, actuator using the electret electrode, oscillation generator, oscillation generation device, and communication device using the oscillation generation device
04/29/2010WO2010047057A1 Method of manufacturing microphone
04/29/2010WO2010047056A1 Method of manufacturing microphone and microphone
04/29/2010DE102008053327A1 Microphone arrangement for use in communication technology, has cased microphone, and acoustic channel connecting sound entry opening and environment above interconnect device on side of interconnect device
04/28/2010EP2180722A1 Method for manufacturing electret diaphragm
04/28/2010EP1632105B1 Fabrication of silicon microphones
04/28/2010CN201444697U Capacitance microphone
04/28/2010CN201444696U Miniature microphone structure capable of being assembled easily
04/27/2010US7706559 Apparatus for suppressing radio frequency interference in a microphone assembly with preamplifier
04/27/2010US7706554 Electret condenser
04/22/2010WO2010045107A2 Microphone having multiple transducer elements
04/21/2010EP2178312A1 Directional silicon condenser microphone having additional back chamber
04/21/2010EP2178311A1 Electro-acoustic transducer
04/21/2010EP2178310A1 Electro-acoustic transducer
04/21/2010EP2178309A2 Method and electronic device for driving a capacitance electro-acoustic transducer
04/21/2010EP2177049A1 Electro-acoustic transducer comprising a mems sensor
04/21/2010CN201440726U Capacitive microphone device
04/21/2010CN201440725U Minitype condenser microphone
04/21/2010CN201440724U Point acoustic source electrostatical loudspeaker
04/20/2010US7702124 Electroacoustic miniature transducer for a hearing aid
04/20/2010US7702118 Electret condenser microphone for noise isolation and electrostatic discharge protection
04/14/2010CN201438761U Capacitance microphone system
04/14/2010CN201438760U Capacitance microphone device
04/14/2010CN201438743U 麦克风 Microphone
04/08/2010WO2010038229A2 Actuator apparatus with comb-drive component and methods useful for manufacturing and operating same
04/07/2010EP2173114A1 Diaphragm structure and acoustic sensor
04/07/2010EP2172061A1 Electrostatic thin-film sound transducer, and method for the production thereof
04/01/2010WO2010034526A1 Circuit arrangement for providing an analog signal, and electronic apparatus
03/2010
03/31/2010EP2168493A1 Ultrasonic probe, and ultrasonic diagnosing device
03/31/2010CN101690264A acoustic sensor
03/31/2010CN101690263A acoustic sensor
03/31/2010CN101690262A mems microphone
03/31/2010CN101690255A Microphone apparatus and manufacturing method thereof
03/31/2010CN101686826A Ultrasonic probe, and ultrasonic diagnosing device
03/24/2010CN201430684Y Microphone integrated with noise-decreasing function
03/24/2010CN101682821A Diaphragm structure and acoustic sensor
03/24/2010CN101677803A Ultrasonic probe and ultrasonic diagnosis device
03/24/2010CN101677423A Micro electromechanical system (MEMS) microphone
03/24/2010CN100596241C Single-crystal silicon micro-machinery manufactured capacitor type microphone and method for manufacturing same
03/23/2010US7684575 Electret assembly for a microphone having a backplate with improved charge stability
03/18/2010WO2010030352A1 Means for transforming luminaires into audio emitters
03/18/2010WO2010030011A1 Electret film and electret comprising same
03/18/2010WO2010029655A1 Semiconductor device
03/18/2010WO2010029161A1 Patterned electret structures and methods for manufacturing patterned electret structures
03/18/2010US20100067727 Noise cancelling microphone with wind shield
03/17/2010EP2164281A1 Acoustic sensor
03/17/2010EP2164280A1 Acoustic sensor
03/17/2010EP2163121A1 Sonic sensor element
03/17/2010CN201426178Y silicon-based microphone
03/17/2010CN201426177Y Mems麦克风 Mems Microphone
03/17/2010CN201426176Y Silicon capacitance microphone
03/17/2010CN201426175Y Capacitance microphone
03/17/2010CN101674519A Capacitance-type microphone of micro-computer
03/11/2010WO2009154981A3 Mems microphone array on a chip
03/10/2010EP2161948A1 Electrostatic loudspeaker systems for application in the cabin of an industrial or commercial vehicle
03/10/2010CN201422161Y capacitor microphone
03/10/2010CN100593959C Electret capacitor microphone
03/09/2010US7673375 Method of fabricating a polymer-based capacitive ultrasonic transducer
03/04/2010WO2010023776A1 Capacitive vibration sensor
03/03/2010EP2159222A1 Additives to improve the electret behaviour of polycarbonates
03/03/2010CN201418146Y Miniature capacitive type microphone
03/03/2010CN201418145Y Microphone
02/2010
02/24/2010CN101656906A Speaker monomer structure
02/18/2010WO2010018998A2 Acoustic/electrical signal converting package
02/17/2010EP2153777A1 Ultrasonic probe and ultrasonic diagnosis device
02/17/2010EP1520446B1 Method for forming acoustically active element in a multi-layer circuit-board structure and a multi-layer circuit-board structure
02/17/2010CN101651919A Silicon capacitance microphone
02/17/2010CN101651918A Capacitance type microphone
02/17/2010CN101651917A Capacitance microphone
02/17/2010CN101651916A Packaging structure for microphone with embedded substrate
02/17/2010CN101651915A Electronic device and electric sound transducer thereof
02/17/2010CN100591169C Floating gate electret capacitance microphone
1 ... 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 ... 54