Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 1 - Details of transducers
Patents for H04R 1 - Details of transducers (42,173)
08/1995
08/01/1995US5438553 Transducer
07/1995
07/27/1995WO1995020303A1 Headsets
07/27/1995WO1995020214A1 Polyhedral directional transducer array
07/26/1995EP0664659A2 Perforated acoustical attenuators
07/25/1995US5436977 Speaker system
07/25/1995US5436976 Omni-directional stereo speaker
07/22/1995CA2139288A1 Perforated acoustical attenuators
07/20/1995WO1995019678A1 Method and apparatus for underwater communication
07/19/1995EP0550684B1 Acoustic transmitter
07/18/1995US5433414 Speaker mounting system
07/12/1995EP0614600B1 Loudspeaker
07/11/1995US5432860 Speaker system
07/11/1995US5432857 Dual bandpass secondary source
07/11/1995US5432396 For converting acoustic wave energy into electric energy
07/11/1995CA1336295C Sound reproducing apparatus
07/05/1995EP0661904A2 Noise reducing microphone apparatus
07/05/1995EP0661902A1 Noise removing apparatus in a microphone
07/05/1995CN2203006Y Structure-improved receiver
07/05/1995CN2203005Y Image displayer with loudspeaks box
07/05/1995CN1104824A Manufacture of speaker box by casting inorganic composite materials
07/04/1995US5430803 Bifunctional earphone set
07/04/1995US5430260 Speaker system
06/1995
06/29/1995DE4446690A1 Zusammengesetzte Lautsprecheranordnung und Verfahren zu deren Ansteuerung Composite speaker arrangement and driving method thereof
06/29/1995DE4343807A1 Digital loudspeaker array for electric-to-acoustic signal conversion
06/28/1995EP0660640A2 Double-chamber bass-reflex cabinet
06/28/1995EP0660639A1 Fixing system for microphone
06/28/1995EP0660638A1 Speaker system with an anion generator and a television set using the speaker system
06/28/1995CN1104403A Porcelain sound box
06/28/1995CN1104400A Stereo and video device and case of same and manufacture of same
06/28/1995CN1029182C Noise eliminating element and electrical circuit having same
06/27/1995US5428688 For use with a face mask
06/27/1995US5427102 Active noise cancellation apparatus in MRI apparatus
06/22/1995WO1995016878A1 Mounting for loudspeakers or lamps fitted in ceilings or walls
06/22/1995DE4344457A1 Electroacoustic transducer holder for telecommunications terminals handsets
06/21/1995CN2201762Y Mic echo device
06/20/1995US5426719 Ear based hearing protector/communication system
06/15/1995WO1995015870A1 Sealing panel, particularly for cars, comprising a loud speaker mounting location
06/14/1995EP0657325A1 Sealing panel, in particular for automobiles, with speaker holder
06/14/1995EP0657085A1 Microphone and loudspeaker system.
06/13/1995US5425104 Inconspicuous communication method utilizing remote electromagnetic drive
06/13/1995US5425003 Acoustic transducer mounting clamp
06/13/1995US5423500 Flat bracket for wall mount speakers
06/07/1995CN2200268Y Mouthpiece of microphone
06/07/1995CN2200267Y Sound box for Gaobaozhen sounder system no need of frequency division device
06/07/1995CN2200266Y Steel net mouthpiece of microphone and its attachment
06/06/1995US5422957 Cable take-up for earphones
06/06/1995US5422956 Sound parameter controller for use with a microphone
06/03/1995CA2110564A1 Granite loudspeaker cabinet
06/01/1995WO1995015068A1 High gain acoustic transducer
06/01/1995WO1995015044A1 Telephone communication headset
06/01/1995DE4340493A1 Loudspeaker cabinet vibration absorbing foot
06/01/1995DE4340274A1 Head-phone and ear-phone accessories
06/01/1995DE4340049A1 Loudspeaker housing with curved wall areas
05/1995
05/31/1995CN1103164A Vibration shell density sensor
05/31/1995CN1028707C Portable type audio reproducing and loudening apparatus
05/31/1995CN1028706C Microphone packaging scheme
05/30/1995US5420935 Auricle insertion headphone with improved grill
05/30/1995US5420739 Portable audio device with a detachable control unit
05/30/1995US5420563 Motor-vehicle horn
05/30/1995US5419865 Plastic molding method
05/26/1995WO1995014362A1 Multi-channel headset with controlled sound-emission characteristics
05/26/1995WO1995013721A1 Umbrella
05/24/1995EP0654953A1 Electroacoustic transducer arrangement
05/24/1995EP0654245A1 Ultrasonic transesophageal probe for the imaging and diagnosis of multiple scan planes
05/24/1995CN2198733Y Vibrating tube type sound box
05/24/1995CN2198732Y Passive radiator
05/23/1995US5418338 Adjustable speaker box
05/23/1995US5418336 Sound output device
05/20/1995CA2135692A1 Ultrasonic transesophageal probe for the imaging and diagnosis of multiple scan planes
05/16/1995US5416284 Speaker enclosures
05/16/1995US5416283 Drop-in speaker mount
05/16/1995CA1335611C Electro acoustic transducer and loudspeaker
05/11/1995WO1995012961A1 Gradient directional microphone system and method therefor
05/11/1995WO1995012960A1 Acoustic imaging sound dome
05/10/1995EP0652686A1 Adaptive microphone array
05/10/1995EP0631709A4 Dual element headphone.
05/10/1995CN2196843Y Sound set
05/10/1995CN2196842Y Wire reeling-in type earphone
05/10/1995CN1102493A System for delivering sound to and monitoring effects on a fetus
05/09/1995US5414769 Articulated headset support
05/09/1995US5414229 Molded bracket for mounting a speaker in a vehicle
05/05/1995CA2114076A1 System for generating and imparting sounds to a fetus
05/03/1995EP0650656A1 Loudspeaker.
05/02/1995US5412736 Personal audio system and earphone for same
05/02/1995US5412622 Apparatus for discriminating sound sources in a water environment
05/02/1995US5412621 Encapsulated hydrophone element for towed hydrophone array
05/02/1995US5412162 Pre-formed speaker grille cloth
04/1995
04/27/1995DE4336149A1 Ultrasonic transducer which is composed of a multiplicity of transducer elements
04/26/1995EP0650308A1 Electroacoustic transducer and method of fabricating the same
04/26/1995EP0442912B1 Loudspeaker arrangement
04/25/1995US5410608 Microphone
04/25/1995US5410111 Housing lining
04/20/1995WO1995010926A1 Loudspeaker apparatus
04/19/1995EP0649269A1 Speaker enclosure with extended range of diffusion
04/19/1995EP0649253A1 Television receiver with built-in loudspeakers
04/18/1995CA2016301C Image derived directional microphones
04/18/1995CA1335308C Speaker
04/13/1995WO1995010164A1 Microphone system for teleconferencing system
04/13/1995WO1995010163A1 Loudspeaker system
04/12/1995EP0647386A1 Loudspeaker cone suspension rim having integral gasket
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