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)
09/1998
09/23/1998CN2292359Y Headset earphone capable of eliminating press pain on ear
09/23/1998CN1194086A 个人计算机 PC
09/23/1998CN1194085A Louds peakers with panel acoustic radiation elements
09/22/1998US5812686 Device for active simultation of an acoustical impedance
09/22/1998US5812685 Non-directional speaker system with point sound source
09/22/1998US5812676 Near-field reproduction of binaurally encoded signals
09/22/1998US5812675 Sound reproducing array processor system
09/22/1998US5812659 Ear microphone with enhanced sensitivity
09/22/1998US5812496 Water resistant microphone
09/22/1998US5809574 Hearing protection device
09/17/1998DE19810582A1 Headphones with flexible head band
09/16/1998CN2291766Y Earphone microphone with positioning structure
09/16/1998CN2291765Y Speaker
09/16/1998CN1193248A Method for mfg. of voice-box body and product thereof
09/15/1998US5809159 Structure of an earpiece clamp
09/15/1998US5809154 Ported loudspeaker system and method
09/15/1998US5809153 Loudspeaker system
09/15/1998US5808243 Multistage turbulence shield for microphones
09/15/1998US5806146 Microphone clip connecting structure
09/15/1998CA2117931C Adaptive microphone array
09/09/1998EP0862399A1 A device having rotatable legs
09/09/1998CN2290962Y Super-heavy bass loudspeaker
09/09/1998CN2290961Y Quick shaping loudspeaker having harmonious tone quality
09/08/1998US5805717 Light sensitive switch with microphone
09/08/1998US5805709 Desktop microphone base
09/08/1998US5804906 Sound generating device
09/08/1998US5804774 For use with a compression driver
09/03/1998WO1998038832A1 Electroacoustic transducer comprising spring contacts formed with at least one bend
09/03/1998WO1998038608A1 Sounder
09/03/1998DE19708806C1 Fibre=optic hydrophone-probe for measuring pressure amplitudes in liquid medium
09/02/1998EP0862351A2 Loudspeaker
09/02/1998EP0861571A1 Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same
09/02/1998CN2290160Y Dumbbell loudspeaker box
09/02/1998CN2290159Y Quick radiating device for active loudspeaker box
09/02/1998CN1192303A Modular unit headset
09/02/1998CN1192127A A mounting foot device for Hi-Fi equipment
09/02/1998CN1192116A Microphone
09/01/1998US5802197 Audio decoy
09/01/1998US5802196 Speaker for radiating sound waves in all directions relative to a speaker supporting surface
09/01/1998US5802193 Outdoor loudspeaker system
09/01/1998US5802192 Speaker waterproof structure for electrical equipment
09/01/1998US5802191 Loudspeakers, systems, and components thereof
09/01/1998US5802190 Linear speaker array
08/1998
08/26/1998EP0861012A1 Loudspeaker and telephone apparatus comprising such a loudspeaker
08/26/1998EP0859565A1 Front-locking swivel ball loudspeaker mount
08/26/1998CN2289365Y Microphone capable of reducing hand-touching noise
08/26/1998CN1191621A Acoustic horn transducer with conic type diffuser having exponential profile in wood
08/25/1998US5799097 Earphone radio receiver
08/25/1998US5799096 Desktop microphone seat
08/20/1998DE19706438A1 Loudspeaker segment box
08/19/1998CN2288566Y Earphone for two persons at same time
08/19/1998CN2288565Y Outdoor water-proof loadspeaker box
08/19/1998CN2288564Y Loadspeaker box
08/18/1998US5796854 Thin film speaker apparatus for use in a thin film video monitor device
08/18/1998CA2150819C Gradient directional microphone system and method therefor
08/13/1998WO1998035529A2 Elastomeric dielectric polymer film sonic actuator
08/13/1998WO1998035460A1 Screening device and electroacoustic equipment provided with this device
08/13/1998DE19745320C1 Hygiene device for acoustic telephone hearing- or speaking-devices
08/12/1998CN2287768Y Table type microphone base with positioning structure
08/12/1998CN1190321A Sound resonator of stone material and its production
08/11/1998US5794201 Digital acoustic signal processing apparatus
08/11/1998US5793878 Headset microphone having a location apparatus
08/11/1998US5793877 System for radiating sound from a movable member
08/11/1998US5793876 Method for the diffusion of a sound with a given density
08/11/1998US5793873 Sound capturing method and device
08/11/1998US5793865 Cordless headset telephone
08/11/1998US5793001 For transducing acoustic or electromagnetic radiant energy
08/11/1998US5793000 Speaker system
08/11/1998US5792999 Noise attenuating in ported enclosure
08/11/1998US5792998 Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same
08/05/1998EP0856977A1 Device for protecting a microphone from external disturbances
08/05/1998EP0763310B1 Loudspeaker, in particular in the form of a column
08/04/1998US5790684 Transmitting/receiving apparatus for use in telecommunications
08/04/1998US5790683 Headphone including split earphones and coupling means for coupling it to the ears
08/04/1998US5790681 Fixing assembly for a helmet headset
08/04/1998US5790680 Microphone-holding decorative pin
08/04/1998US5790679 Communications terminal having a single transducer for handset and handsfree receive functionality
08/04/1998US5788516 Elastomeric connector
07/1998
07/29/1998EP0855846A2 Noise attenuating
07/29/1998CN2286947Y Full-glass artistic-lamp voice box with internal structure of semi-circular tube
07/29/1998CN2286946Y High-fidelity voice box
07/29/1998CN1189285A Electronic acoustic device
07/29/1998CN1189078A Granite loudspeaker box
07/28/1998US5787183 Microphone system for teleconferencing system
07/28/1998US5787166 Telephone communication headset
07/23/1998DE19701756A1 Loudspeaker arrangement for motor vehicle
07/22/1998CN1188586A Acoustical audio system for producing three dimensional sound image
07/22/1998CN1188548A Electrodynamic driving means for acoustic emitters
07/21/1998US5784479 Loudspeaker frame
07/21/1998US5784478 Audible environment awareness restoring device
07/21/1998CA2115127C Speaker system with an anion generator and television using the speaker system
07/16/1998WO1998031192A1 Speaker porting for a communication device
07/16/1998WO1998031187A1 Speaker device
07/16/1998WO1998031186A1 Noise control device
07/16/1998WO1998031185A2 Speaker system having an undulating rigid speaker enclosure
07/16/1998WO1998025038A3 Tilt adjustment device for a boom stand
07/16/1998DE19700670C1 Removable ear support for cable to personal stereo speakers
07/16/1998DE19647306A1 Cage-less moving coil loudspeaker oscillation unit
07/15/1998EP0853442A2 Earphone
07/15/1998EP0852891A1 Mounting arrangement for a noise cancelling microphone
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