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)
05/2000
05/16/2000US6062338 Loud speaker enclosure
05/16/2000US6062337 Audio system that can be mounted on the body of a user
05/11/2000WO2000027167A1 Miniature surface mounted directional microphone assembly
05/11/2000WO2000027165A1 Microphone
05/11/2000WO2000027096A1 Mobile telephone with a loudspeaker
05/11/2000WO1999055259A9 Hearing coupler shells of soft pliable thermoplastic material
05/11/2000DE19850951A1 Process to sterilize telecommunications equipment by gamma radiation such as telephones following maintenance and repair
05/10/2000EP0999721A2 Device for controlling connection of built-in type ear-microphone for portable radio terminal
05/10/2000EP0873666B1 Improvement to an electroacoustic communication device for use on protective headgear
05/10/2000CN2377790Y Quick combined and moving loudspeaker box
05/09/2000US6061460 Fixing device of speaker unit for portable computer
05/09/2000US6061459 Surface-mounted electromagnetic sound generating body
05/09/2000US6061457 Waterproof microphone and speaker
05/09/2000US6061456 Noise cancellation apparatus
05/09/2000US6059923 Rotary acoustic horn with sleeve
05/09/2000US6059069 Loudspeaker waveguide design
05/06/2000CA2253039A1 Sound capturing method and device
05/04/2000WO2000006309A3 Off-aperture electrical connection for ultrasonic transducer
05/03/2000EP0998167A2 Microphone array system
05/03/2000CN2376693Y Assembling loudspeaker box
05/02/2000US6058315 Speaker assembly for a radiotelephone
05/02/2000US6058199 Speaker system with vibration isolation speaker unit mounting structure
05/02/2000US6058196 Panel-form loudspeaker
05/02/2000US6057753 Vibrational transducer
05/02/2000US6057659 Speaker apparatus
05/02/2000US6056381 Vibration isolation platform
05/02/2000CA2004090C Telephone handset device
04/2000
04/26/2000EP0995337A1 Electrolytic loudspeaker assembly
04/26/2000EP0995336A1 Method and apparatus for formatting the digital audio signal for use of the sound reproduction
04/26/2000CN2376157Y Separable wide-angle circulating speaker
04/26/2000CN2376156Y Shock-proof glass speaker
04/26/2000CN2376155Y 麦克风 Microphone
04/26/2000CN1251491A Earphone-microphone combination including radio receiver module and switching method of its operation mode between telephone mode and radio receiver mode
04/25/2000US6055320 Directional horn speaker system
04/25/2000US6055080 Optical microphone
04/25/2000CA2011674C Electro-acoustic system
04/20/2000WO2000022877A1 Resonant panel loudspeakers
04/20/2000WO2000022876A1 Point source speaker system
04/20/2000CA2345749A1 Loudspeakers
04/19/2000EP0994636A2 Headphone device
04/19/2000EP0993344A2 Ultrasonic transducer
04/19/2000CN2374320Y Inner wall form for pouring concrete loudspeaker box
04/18/2000US6052463 Loudspeaker and telephone device comprising such a loudspeaker
04/18/2000US6051913 Electroacoustic transducer and acoustic isolator for use therein
04/13/2000WO2000021330A1 An electroacoustic communications unit
04/13/2000WO2000021264A1 Pivotable earpiece assembly
04/13/2000DE19846291A1 Bass adapter has optionally shaped opening in loudspeaker housing that can be altered by mechanical arrangement and used to acoustically match loudspeaker to housing or room acoustics
04/13/2000CA2345645A1 An electroacoustic communications unit
04/12/2000EP0993231A2 Sound generating device
04/12/2000EP0993230A2 Headrest with audio system for motor vehicle
04/12/2000EP0992973A2 Method for attaching an acoustic transducer to a substrate
04/12/2000EP0992028A1 Vibrational transducer
04/12/2000CN2373960Y Drop-proof and collision-proof protective mechanism for microphone
04/12/2000CN1250586A Personal computing devices comprising a resonant panel loudspeaker
04/11/2000CA2116178C Speaker system
04/06/2000WO2000019685A1 Headset with adjustable earpiece
04/06/2000DE19926307A1 Induction coil housing e.g. for police surveillance tracking device, has fixings for reception of safety pin used for hidden attachment to garment
04/06/2000DE19854604A1 Induction coil housing e.g. for police surveillance tracking device, has fixings for reception of safety pin used for hidden attachment to garment
04/06/2000DE19845608A1 Listening-speaking system especially for working on airfield where communications are required, has ear defender with vibration generator connected to coupling element on ear defender
04/06/2000DE19842126A1 Ear piece and headset holder has epsilon-shape enabling simple suspension of ear pieces and headsets, triangular opening enabling suspension of neck yoke microphones
04/05/2000EP0991297A2 3D woofer drive circuit
04/05/2000EP0991296A2 Variable disposition wide band multiway loudspeakers
04/05/2000EP0991295A2 Speaker and speaker device
04/05/2000CN2372856Y Loudspeaker box
04/05/2000CN2372855Y Improved loudspeaker box
04/05/2000CN2372854Y Insert earphone
04/05/2000CN2372853Y Loudspeaker with light ring
04/04/2000US6047077 Bipolar speaker
04/04/2000US6047076 Earphone-microphone system having double ear braces
04/04/2000US6046783 Vibration preventing device for use in a television
04/04/2000US6044925 Passive speaker
03/2000
03/30/2000WO2000018185A1 System for controlling low frequency acoustical directivity patterns and minimizing directivity discontinuities during frequency transitions
03/30/2000WO2000018183A1 Horn-type loudspeaker system
03/30/2000WO2000018181A1 System for dispensing hygienizing fluids applicable to public telephones
03/30/2000WO2000018180A1 Method for sound reproduction and pillar loudspeaker
03/30/2000WO2000016966A1 Rotary acoustic horn with sleeve
03/30/2000CA2343141A1 Rotary acoustic horn with sleeve
03/29/2000EP0988775A1 Vibration transducers for resonant panel-form loudspeaker and loudspeaker with the same
03/29/2000EP0988772A1 Personal computing devices comprising a resonant panel loudspeaker
03/29/2000EP0988771A1 Dipole speaker headrests
03/29/2000EP0988011A1 Ear phone assembly for use with a hearing screener
03/29/2000EP0895702B1 Audio system that can be mounted on the body of a user
03/29/2000CN2371745Y Natural stone loudspeaker box
03/29/2000CN2371744Y Microphone mouthpiece
03/29/2000CN2371743Y Microphone holding device
03/29/2000CN2371742Y Vibration damper for loudspeaker box
03/29/2000CN2371741Y Loudspeaker box
03/29/2000CN2371740Y Ultra-large loudspeaker box
03/29/2000CN1249119A Microphone and receiver for automatic accompaniment
03/28/2000US6041888 Low frequency flextensional acoustic source for underwater use
03/28/2000CA2181805C Polyhedral directional transducer array
03/28/2000CA2056586C Moment bender transducer drive
03/23/2000WO2000016591A1 Acoustic loudspeaker with structures for selectively dampening sound
03/23/2000WO2000016588A1 Transmission line loudspeaker with compound driver
03/23/2000WO2000016308A1 Improvements relating to beamformers
03/23/2000WO1999052323A8 Folded sagnac sensor array
03/23/2000DE19836229C1 Anordnung zur Wärmeableitung, insbesondere für Ultraschallwandler mit hoher Leistung Arrangement for heat discharge, particularly for ultrasonic transducers with high performance
03/22/2000EP0986803A2 Video-assisted apparatus for hearing impaired persons
03/22/2000EP0782793A4 A tactile sensation generator
03/22/2000CN2370638Y Point source of sound speaker
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