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)
10/1998
10/29/1998WO1998048526A2 Time-multiplexed short-range magnetic communications
10/29/1998WO1998047740A1 Automobile sound producing device
10/29/1998WO1998031185A3 Speaker system having an undulating rigid speaker enclosure
10/29/1998DE19717908A1 Side section for accommodating loudspeaker for vehicle door
10/28/1998EP0873666A1 Improvement to an electroacoustic communication device for use on protective headgear
10/28/1998EP0873595A1 Loudspeaker thermal management structure
10/28/1998CN1197363A Element for reproducing and/or recording sound
10/28/1998CA2203871A1 Speaker cabinet made of an injected mixture of polystyrene and hardwood powder
10/27/1998US5828768 Multimedia personal computer with active noise reduction and piezo speakers
10/27/1998US5828765 Audio loudspeaker assembly for recessed lighting fixture and audio system using same
10/27/1998US5828627 Method of and apparatus for producing spherical waves in the ultrasonic range
10/27/1998US5828012 Protective cover assembly having enhanced acoustical characteristics
10/27/1998US5826582 Ear phone assembly for use with a hearing screener
10/22/1998WO1998047311A1 Headset assembly
10/22/1998DE19710967C1 Breitbandlautsprecher Broadband speaker
10/21/1998EP0873040A2 Acoustic noise reducing
10/21/1998EP0873039A2 Speaker
10/21/1998EP0872825A2 A method for improving the resonance of a musical instrument, and a musical instrument made by the method
10/21/1998EP0872156A1 Stereo loudspeaker system
10/21/1998EP0872154A1 An acoustical audio system for producing three dimensional sound image
10/21/1998EP0872153A1 Micromechanical microphone
10/21/1998EP0872099A1 A method and device to fasten a loudspeaker to a circuit board
10/21/1998CN1196653A Cross complementary voice box with low frequency lower limit and small distortion
10/21/1998CN1196652A Earphone
10/21/1998CN1196651A Plastic concrete sandwich voice box casing and its producing method
10/21/1998CN1196650A Speaker apparatus
10/20/1998US5825903 Speaker grille
10/20/1998US5825901 Rotary low-frequency sound reproducing apparatus and method
10/20/1998US5825900 Loudspeaker housing for video display appliance
10/20/1998US5825897 Noise cancellation apparatus
10/20/1998US5825718 Underwater communication apparatus and underwater microphone, and closed-type sound converter
10/20/1998US5824969 Speaker system with a three-dimensional spiral sound passage
10/20/1998US5824968 Ear tips having a plurality of ear contacting surfaces
10/20/1998US5824967 Ear muffler
10/20/1998US5824966 Enhanced band earplug
10/15/1998WO1998046043A2 Sound pickup device, specially for a voice station
10/15/1998WO1998045937A1 Radio communications apparatus with attenuating ear pieces for high noise environments
10/15/1998DE19728820C1 Plastics cover e.g. for loudspeaker used in vehicle
10/15/1998DE19724667C1 Head phones and speaker kit e.g. for telephony or for voice communication with computer
10/14/1998EP0871345A1 Element for reproducing and/or recording sound
10/14/1998EP0871313A1 Communication apparatus, in particular for telephony, which uses an acoustic channel to connect a microphone to the outside of the apparatus
10/14/1998EP0871312A1 Two-way voice communication device
10/14/1998EP0870394A1 Method and apparatus for transmitting coded audio signals through a transmission channel with limited bandwidth
10/14/1998EP0870369A1 Enhanced concert audio process utilizing a synchronized headgear system
10/14/1998EP0870298A2 Noise cancellation and noise reduction apparatus
10/14/1998EP0766904B1 Use of a fluid flow measuring device as a microphone and system comprising such a microphone
10/13/1998US5822443 Speaker system for a television
10/13/1998US5822440 Enhanced concert audio process utilizing a synchronized headgear system
10/13/1998US5821471 Acoustic system
10/13/1998US5821470 Broadband acoustical transmitting system
10/13/1998US5821468 For an ear cup in a noise attenuating headset
10/13/1998US5819959 Apparatus for flying audio equipment cabinets in a selected array
10/13/1998CA2145699C Voice actuated switching system
10/11/1998CA2234519A1 Communication device, notably telephony device
10/08/1998WO1998044762A1 Wireless open ear canal earpiece
10/08/1998WO1998044760A2 Wired open ear canal earpiece
10/08/1998DE19714160A1 Loudspeaker for automobile audio system
10/07/1998EP0869696A1 Stereo/telephone change-over transmitter/receiver
10/07/1998EP0868829A1 Magnetic fluid loudspeaker assembly with ported enclosure and method of determining parameters thereof
10/07/1998EP0868828A1 Acoustic reflector
10/07/1998CN2293931Y Three-dimensional all-information natural sound field loudspeaker box
10/07/1998CN2293930Y Air damper tube type all-absorption loudspeaker box
10/07/1998CN2293929Y Loudspeaker decorative net
10/07/1998CN2293928Y Wall hanging voice box support
10/07/1998CN1195463A Panel-form microphones
10/07/1998CN1195462A Packaging
10/07/1998CN1195461A Display screens incorporating loudspeakers
10/07/1998CN1195460A Greetings or like card
10/07/1998CN1195459A Panel-form loudspeakers
10/07/1998CN1195458A Panel-form loudspeakers
10/07/1998CN1195457A Loudspeakers made of panel-form acoustic radiating elements
10/07/1998CN1195456A Notice board with loudspeakers
10/07/1998CN1195455A Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
10/07/1998CN1195454A Acoustic device
10/06/1998US5818950 Speaker system and its support legs
10/06/1998US5818488 Printer having circuit for providing improved printing quality
10/06/1998US5816953 Method and apparatus for interactive tennis practice
10/01/1998WO1998043464A1 Personal computing devices comprising a resonant panel loudspeaker
10/01/1998DE19808064A1 Loudspeaker enclosure on column and foot stand
10/01/1998DE19717303C1 Exponential audio loudspeaker housing with back-plane input
10/01/1998DE19711708A1 Head carrier unit especially for headphones
10/01/1998CA2284565A1 Personal computing devices comprising a resonant panel loudspeaker
09/1998
09/30/1998EP0868107A2 Loudspeaker unit
09/30/1998CN2293164Y All remote-controlled multifunctional household image and sound equipment cabinet
09/30/1998CN1194767A Inertial vibrative transducer
09/30/1998CN1194766A Inertial vibrative transducer
09/30/1998CN1194765A Vibrative transducer
09/30/1998CN1194764A Portable optic disk player
09/30/1998CN1194763A Musical instrument incorporating loudspeakers
09/30/1998CN1194762A Image display incorporating loudspeakers
09/30/1998CN1194761A Loudspeakers comprising panel-form acoustic radiating element
09/30/1998CN1194760A Loudspeakers comprising panel-form acoustic radiating elements
09/30/1998CN1194568A Loudspeaker device
09/29/1998US5815589 Push-pull transmission line loudspeaker
09/29/1998US5815588 Video camcorder speaker assembly
09/29/1998US5814095 Implantable microphone and implantable hearing aids utilizing same
09/24/1998WO1998042160A2 Broadband loudspeaker
09/24/1998CA2284678A1 Broadband loudspeaker
09/23/1998EP0866637A2 Miniature microphone component with conductive rubber contacts
09/23/1998EP0865713A1 Sound reproduction device or microphone
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