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)
05/1998
05/22/1998WO1998021500A1 Device for the damping of vibrations between objects
05/22/1998WO1998020820A1 Improved hearing protection device
05/22/1998CA2270363A1 Improved hearing protection device
05/22/1998CA2191022A1 Tilt adjustment device for a boom stand
05/20/1998EP0843452A1 Telephone handset with reduced thickness of the receiver
05/20/1998EP0842508A1 Acoustic wave focusing method and device
05/20/1998EP0745311B1 Housing with integral acoustic chamber and anti-rattle printed circuit board supports
05/20/1998DE19641503A1 Electrostatic loudspeaker with optional circular radiation characteristic
05/20/1998CN2282314Y Voice box
05/19/1998US5754669 Speaker grille
05/19/1998US5754664 Vehicle audio system
05/19/1998US5752632 Tactical radio microphone holder
05/14/1998WO1998020660A1 Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone
05/14/1998WO1998020659A1 Radiotelephone having an acoustical wave guide coupled to a speaker
05/14/1998DE19646439A1 Moving coil loudspeaker chassis with linear coil bearing and coil stop protection
05/14/1998DE19646200A1 Temperature regulating device for telephone handpiece
05/14/1998CA2219152A1 Telephone handset
05/12/1998US5751328 Printer having circuit for providing improved printing quality
05/12/1998US5750943 Speaker array with improved phase characteristics
05/12/1998US5749433 Massline loudspeaker enclosure
05/12/1998US5749137 Modular loudspeaker enclosure suspension rigging method
05/07/1998WO1998019498A1 Ear muffler
05/07/1998WO1998019497A1 Neck supported microphone
05/07/1998DE19643557A1 Musical instrument to be used as percussion instrument e.g. drum
05/07/1998CA2270078A1 Ear muffler
05/06/1998EP0627087B1 Hydrophone arrangement
05/06/1998CN2281052Y Microphone protective base
05/06/1998CN2281051Y Improved microphone stand lifting device
05/06/1998CN1038294C Hi-Fi technique for electric speaker
05/05/1998US5748757 Collapsible image derived differential microphone
05/05/1998US5748753 High power audio subwoofer
05/05/1998US5748565 Flexible interlink for hydrophone array
05/04/1998CA2189480A1 Stereo sound enclosure
04/1998
04/30/1998WO1998018291A1 Acoustic piezoelectric vibrator and loudspeaker using the same
04/30/1998WO1998018290A1 Multimedia microphone power supply apparatus having audio port extenders with a headset and/or speakers controller
04/30/1998DE19647095C1 Multiple loudspeaker device with axially aligned Hi=Fi speaker-boxes
04/29/1998EP0838125A1 Device for electroacoustic diffusion, with diaphragms, spiders and horns of balsa wood or mixtures thereof
04/29/1998EP0604450B1 Loudspeaker with an enclosure having a hexagonal prism shape
04/29/1998CN2280394Y Modulation and A/D type combition electric apppliance
04/29/1998CN2280393Y Sound box
04/29/1998CN1180470A Improvement in or relating to loudspeakers
04/29/1998CN1180287A Antiepidemic sterilizing microphone and its manufacturing method
04/29/1998CN1180200A Notebook personal computer having speaker cover structure
04/28/1998US5745588 Differential microphone assembly with passive suppression of resonances
04/28/1998US5745584 Sound bubble structures for sound reproducing arrays
04/28/1998CA2137075C Loudspeaker
04/23/1998WO1998016409A1 Vehicle loudspeakers
04/23/1998CA2266361A1 Vehicle loudspeakers
04/22/1998EP0836841A2 Headband with dual material construction
04/22/1998CN2279756Y Ultra-low resonant frequency voice box
04/22/1998CN2279755Y Granite loudspeaker box
04/22/1998CN2279754Y Fixed mechanism for microphone head
04/22/1998CN1038180C Television receiver with stereo speakers
04/21/1998US5742697 Microphone with telescopic sound pickup means
04/21/1998US5742696 Modular tweeter
04/21/1998US5742693 Acoustic transducer
04/16/1998WO1998016085A1 Method and apparatus for acoustic chamber with variable volume
04/15/1998CN2278479Y Receiver ozone disinfection deodoriser
04/15/1998CN1038095C Temperature compensation of sound pressure characteristics of electric sound inverter
04/14/1998US5740265 Loudspeaker unit and loudspeaker system employing the unit
04/14/1998US5740263 Multi-media microphone seat
04/14/1998US5740262 Noise removing apparatus using a microphone
04/14/1998US5740259 Pressure wave transducing
04/14/1998US5739763 Method for controlling electronic appliance capable of suppressing user's irritation
04/14/1998US5739481 For mounting a speaker to a support surface
04/14/1998US5739480 Speaker base for alternatively mounting different drivers
04/09/1998WO1998015093A1 Communication terminal
04/09/1998DE19648986C1 Directional rod-type acoustic radiator
04/08/1998CN2278320Y Imitation surrounding stereo sound loudspeakers casing with lamp
04/08/1998CN2278319Y Easy-assembling casing body for loud speakers casing
04/08/1998CN1178443A Miniaturized electro-acoustic transducer with performance decrease minimization
04/07/1998US5737436 Earphones with eyeglass attatchments
04/07/1998US5737435 Sound-reproducing apparatus comprising an acoustic horn, and acoustic horn for use in the apparatus
04/07/1998US5736808 Piezoelectric speaker
04/07/1998US5736689 Audio speaker mounting system with improved mounting and sound isolation features
04/02/1998WO1998014032A1 Magnetic fluid loudspeaker assembly with ported enclosure and method of determining parameters thereof
04/02/1998WO1998014031A1 Flexible interlink for hydrophone array
04/02/1998WO1998013942A1 Vehicular loudspeaker system
04/01/1998EP0833545A2 Loudspeaker device
04/01/1998EP0833544A1 Loudspeaker system, especially for low-frequency power speakers
04/01/1998EP0594713B1 A motor-vehicle horn
04/01/1998CN1177898A Multi-stage turbulent-flow shielding can for microphone
03/1998
03/31/1998US5734733 Television receiver with integrated speakers
03/31/1998US5734732 Speaker arrangement and mounting apparatus and method
03/31/1998US5734728 Portable sound speaker system and driving circuit therefor
03/31/1998US5734320 Emergency warning gear having a multitude of functions
03/25/1998EP0831673A2 Implantable microphone
03/25/1998EP0831572A1 Vent filter member
03/25/1998EP0830777A1 Ear microphone with enhanced sensitivity
03/25/1998EP0830743A1 Modular unit headset
03/25/1998CN2277152Y Device for eliminating vibration noise of microphone
03/24/1998US5732143 Noise cancellation apparatus
03/24/1998US5731555 Loudspeaker enclosure having a low reflection/low diffraction baffle
03/24/1998US5731554 Optimized loudspeaker transducer monuting system
03/24/1998US5731553 Speaker system
03/24/1998US5731552 Speaker system with sound absorbing diaphragm
03/24/1998US5731551 Mounting assembly and method for mounting a loudspeaker in a vehicle
03/24/1998US5730409 Audio speaker with integral bracket
03/19/1998WO1998011705A1 Telephone having sealed acoustical passageway through flip cover hinge
03/18/1998EP0829078A1 Acoustic horn transducer with a conic type diffuser having an exponential profile in wood
1 ... 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 ... 422