Patents for H04R 23 - Transducers other than those covered by groups (1,562)
05/2009
05/20/2009EP2061098A1 Thermal sound generating device
05/13/2009CN201238382Y Audio sensing instrument with convenient process and assembly
04/2009
04/29/2009CN101422050A Hybrid actuator, loudspeaker and sound output method
04/22/2009CN201226595Y Moving magnetic type bone conduction audio transducer
04/22/2009CN101415139A Encapsulation structure for micro electromechanical system transducer
04/22/2009CN101415138A Encapsulation structure for MEMS transducer
04/16/2009US20090097678 Digital microphone and power supply unit for a digital microphone
04/15/2009CN201222804Y Earphone for bone conduction apparatus
04/09/2009DE102006013345B4 Optisches Mikrofon ohne Membran Optical microphone without membrane
04/08/2009CN201219305Y Bone conduction apparatus
04/01/2009CN201216023Y Bone conduction type earphone
04/01/2009CN101400011A Skull conducting apparatus
03/2009
03/25/2009EP2039215A1 Electroacoustic transducer
03/25/2009CN100472832C Radial power MHz ultrasound transducer
03/24/2009CA2465299C Optical displacement sensor element
03/18/2009EP1218716A4 Unitary transducer control system
02/2009
02/19/2009WO2009022658A1 Ultrasonic detection device, ultrasonic detection method, and atomic power plant nondestructive inspection method
02/11/2009EP2023660A1 Hybrid actuator, loudspeaker and sound output method
02/11/2009CN101362585A Semiconductor device, lead frame, and microphone package therefor
01/2009
01/06/2009US7474590 Pressure wave generator and process for manufacturing the same
12/2008
12/30/2008US7471280 Tactile device
12/23/2008US7468575 Electroactive polymer electrodes
12/10/2008CN101321414A Multifunctional energy converter
11/2008
11/27/2008US20080289420 Ultrasound Transducers
11/26/2008CN201156821Y Bone conducting loudspeaker connecting apparatus
11/06/2008WO2008111961A3 Apparatus and method for sonic cleaning of an air filter for wheeled and tracked vehicles
11/05/2008EP1386415A4 Parametric virtual speaker and surround-sound system
10/2008
10/23/2008WO2008126437A1 Ultrasonic inspection equipment
10/22/2008CN100428865C Structuro of diaphragm for optoacoustic transducer
10/01/2008CN201127116Y Ultra thin type depth base loudspeaker having touch shake sense
10/01/2008CN201127115Y Vibration transducer
09/2008
09/24/2008CN101273661A Pressure wave generator and production method therefor
09/18/2008WO2008111961A2 Apparatus and method for sonic cleaning of an air filter for wheeled and tracked vehicles
09/17/2008CN201118980Y Audio sensing instrument
09/17/2008CN201118979Y Semiconductor laser microphone
09/10/2008CN100418104C Surface acoustic wave converter and identification system using the same
09/03/2008EP1963441A1 Polyelectrolyte monolayers and multilayers for optical signal transducers
08/2008
08/27/2008EP1961260A1 Methods, systems and apparatus for measuring acoustic pressure
08/26/2008US7418109 Diaphragm structure of light sound converter
08/20/2008EP1188348B1 Microfabricated transducer and method for making the same
08/20/2008CN201104364Y Bipolar modulating high power pneumatic loudspeaker
08/14/2008US20080191585 Electroactive polymer electrodes
08/13/2008EP1459293B8 Electropneumatic horn
08/13/2008EP1216602B1 Mems digital-to-acoustic transducer with error cancellation
08/13/2008CN201100959Y Bone induction audio bidirectional receiving/transmission device
08/13/2008CN101242683A Digital coding and modulation airflow speaker
07/2008
07/31/2008WO2008089853A1 Loudspeaker actuator
07/23/2008EP1947900A2 Acoustic playback device and method for creating sound
07/01/2008US7394182 Electroactive polymer devices for moving fluid
06/2008
06/26/2008WO2008076929A1 Acoustic substrate
06/26/2008US20080152186 Composite acoustic transducers
06/25/2008CN101207942A Ultra thin type depth base tone loudspeaker with touch sensation shaking feeling
06/25/2008CN101207938A Bone conduction speaker connecting device
06/25/2008CN101207932A Bone induction audio frequency bidirectional transmitting/receiving device
06/24/2008US7391976 Optical acoustoelectric transducer
06/18/2008CN101204119A Thermo-acoustic transducers
06/18/2008CN101203067A Vibration transducer
06/12/2008US20080139946 Capacitive ultrasonic transducer, production method thereof, and capacitive ultrasonic probe
06/12/2008US20080136052 Electroactive polymer manufacturing
06/05/2008US20080131115 Device for Optical Remote Monitoring and System Comprising Such a Device
05/2008
05/21/2008EP1247421A4 Piezoelectric film sonic emitter
05/20/2008CA2401983C Folded sagnac sensor array
05/15/2008US20080112582 Quasi-Self-Focusing High Intensity And Large Power Ultrasonic Transducer
05/13/2008US7372110 Display with integral sound wave generation device
05/07/2008EP1459293B1 Electropneumatic horn
05/06/2008US7368862 Electroactive polymer generators
04/2008
04/30/2008EP1916870A1 Pressure wave generator and production method therefor
04/22/2008US7362032 Electroactive polymer devices for moving fluid
04/15/2008US7359523 Fluidic acoustic transducer
04/10/2008WO2007143362A3 Improved displacement sensor
04/10/2008US20080085018 Apparatus and method for sonic cleaning of an air filter for wheeled and tracked vehicles
04/10/2008DE102006046700A1 Hinter-dem-Ohr-Hörgerät mit externem, optischem Mikrofon Behind-the-ear hearing aid with external optical microphone
04/09/2008EP1909536A2 Behind-the-ear hearing aid with external, optical microphone
04/08/2008CA2455304C System and method for monitoring performance of downhole equipment using fiber optic based sensors
03/2008
03/13/2008WO2008029451A1 Thermal sound generating device
03/12/2008EP1897406A2 Thermo-acoustic transducers
03/11/2008CA2232073C Multi-sense home entertainment chair transducer system
03/05/2008CN100373223C Electric light device and electronic apparatus
02/2008
02/28/2008US20080051623 Simplified implantable hearing aid transducer apparatus
02/27/2008CN101132653A Optical fiber silicon microphone system based on phase carrier modulation
02/19/2008CA2340072C Harmonic amplifier and corresponding electroacoustic transducer
02/07/2008WO2008015664A2 Compact optical video disc player and a method for playing a video stream
02/06/2008CN201018663Y Bone conduction multi-channel device
02/05/2008US7327637 Acoustic pulse actuator
01/2008
01/30/2008CN201015227Y Loudspeaker type audio vibrator device
01/30/2008CN201015226Y Flat series magnetic circuit type audio vibrator device
01/30/2008CN201015225Y Audio vibrator device
01/24/2008DE102006033903A1 Thermo-optical sound generator for e.g. earphone, has porous material with pores filled with fluid staying in direct contact with medium and under static pressure, where membrane does not exist between fluid in region of material and medium
01/23/2008EP1880574A2 Hearing system having improved high frequency response
01/22/2008US7320457 Electroactive polymer devices for controlling fluid flow
01/17/2008WO2005099307A3 Technique and device for through-the-wall audio surveillance
01/17/2008US20080013777 Headset device and method measuring a biosignal
01/17/2008US20080013775 Noise Attenuating Headset
01/09/2008CN201004711Y Identification device for sound texture of nose bone conduction alive body
01/09/2008CN100361196C Electropneumatic horn
01/08/2008US7317804 Sound collecting device minimizing electrical noise
01/03/2008WO2008000007A1 Electroacoustic transducer
12/2007
12/26/2007EP1869947A1 Method and apparatus for communicating sound over an optical link
12/18/2007CA2500045C Hydrophone mandrel for precise placement of gratings
12/12/2007EP1212800B1 Electroactive polymer generators
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16