| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 05/31/1994 | US5317544 Multiple segment fiber optic hydrophone |
| 05/31/1994 | CA1329911C Sound imaging method and apparatus |
| 05/26/1994 | WO1994012002A1 Frount mounting for loudspeaker, and a piece of furniture or room furnishing equipped with such a front mounting |
| 05/26/1994 | WO1994012001A1 Speaker enclosure |
| 05/25/1994 | CN2166565Y Disinfecting device for transmitter |
| 05/24/1994 | US5315663 Passive loudspeaker enclosure for a television receiver |
| 05/19/1994 | DE4307843C1 Electrical connection terminal for underwater electroacoustic transducer - has cylindrical cover cap enclosing terminal pins of transducer plug socket soldered to transducer leads |
| 05/18/1994 | CN2165589Y Sheep horn type pull-rod microphone |
| 05/18/1994 | CN2165588Y Microphone mounting device for loudspeaker |
| 05/18/1994 | CN2165587Y Winding-mounting small horn |
| 05/17/1994 | US5313525 Acoustic apparatus with secondary quarterwave resonator |
| 05/17/1994 | US5313514 Hands free apparatus for land mobile radio telephone |
| 05/11/1994 | WO1994010818A1 Sound amplification system |
| 05/10/1994 | US5310149 Depth adjustable bracket for wall mount speakers |
| 05/10/1994 | CA2023084C Loudspeaker enclosure |
| 05/07/1994 | CA2082371A1 Speaker grille |
| 05/04/1994 | EP0595534A2 Compact loudspeaker assembly for telephone set |
| 05/04/1994 | EP0595514A2 Piezoelectric transducer |
| 05/04/1994 | EP0595457A1 Noise cancellation apparatus |
| 05/04/1994 | EP0594713A1 A motor-vehicle horn |
| 05/04/1994 | CN1086368A Piezoelectric transducer |
| 05/03/1994 | US5309519 Electroacoustic novelties |
| 05/03/1994 | US5309518 Multiple driver electroacoustical transducing |
| 05/03/1994 | US5308937 Loudspeaker apparatus for electronic keyboard musical instrument |
| 05/03/1994 | CA1329143C Speaker system |
| 04/30/1994 | CA2109440A1 Noise cancellation apparatus |
| 04/28/1994 | WO1994009607A1 Hearing aid microphone with modified high-frequency response |
| 04/28/1994 | DE4236255A1 Acoustic lens for plane-wave to spherical-wave transformation - divides tubular acoustic waveguide between two media sepd. by eg polystyrene with conical and ellipsoidal faces |
| 04/28/1994 | CA2146118A1 Hearing aid microphone with modified high-frequency |
| 04/26/1994 | US5307418 Center channel speaker having multiple interconnected backload amplifying chambers for surround sound stereo audio systems |
| 04/26/1994 | US5306880 Omnidirectional speaker system |
| 04/21/1994 | DE4235107A1 Headphone holder for e.g. personal stereo, radio, TV - has each headphone membrane hung on associated ear by semi-circular arm which can be tilted inwards |
| 04/20/1994 | EP0593191A1 Multiple driver electroacoustical transducing |
| 04/20/1994 | CN1085725A Outer casing of sound enclosure |
| 04/20/1994 | CN1085386A Perfumed tablet of fragrant sterilizer for telephone |
| 04/19/1994 | US5305387 Apparatus in an active noise reduction system |
| 04/19/1994 | US5304747 Speaker with motor-controlled internal baffle |
| 04/19/1994 | US5304746 Reduction of standing waves and intermodulation distortion in electro-acoustic transducer |
| 04/19/1994 | US5303426 Sweatband - earphone system |
| 04/14/1994 | WO1994008333A1 Tool for improving sound effect |
| 04/13/1994 | CN1085378A Microphone packaging scheme |
| 04/12/1994 | US5303307 Adjustable filter for differential microphones |
| 04/12/1994 | US5303209 Electroacoustic transducer having a partition wall and a mask wall |
| 04/12/1994 | US5303208 Side looking sonar transducer |
| 04/06/1994 | EP0590869A1 Noise-cancelling telephone handset |
| 04/06/1994 | CN2161041Y Mini acoustics |
| 04/05/1994 | US5299766 Retrofit bracket for wall mount speakers |
| 03/31/1994 | WO1994007343A1 Method for the securing of an electro-acoustic device on or in the human ear and electro-acoustic device for use in the method |
| 03/31/1994 | WO1994007342A1 Bone conduction accelerometer microphone |
| 03/30/1994 | EP0589623A2 Headphone |
| 03/30/1994 | EP0589515A1 Loudspeaker system comprising a plurality of tubes |
| 03/30/1994 | CN2160184Y Disposable microphone health cover |
| 03/30/1994 | CN2160183Y Device for clearing microphone vibration noise |
| 03/30/1994 | CN1084689A 号筒扬声器 Horn Speaker |
| 03/29/1994 | US5299172 Method for adjusting crystal hydrophone output |
| 03/29/1994 | US5298693 Speaker support stand |
| 03/29/1994 | US5298692 Earpiece for insertion in an ear canal, and an earphone, microphone, and earphone/microphone combination comprising the same |
| 03/29/1994 | US5298691 For use in a noisy and dirty environment |
| 03/29/1994 | US5298690 Sound distributor with symmetry of revolution |
| 03/29/1994 | CA2032848C Automatic calibrating apparatus and method for second-order gradient microphone |
| 03/23/1994 | EP0588354A2 Electric apparatus having speaker |
| 03/23/1994 | EP0587804A1 Audio transducer improvements |
| 03/23/1994 | EP0324837B1 Loudspeaker system with wide dispersion baffle |
| 03/22/1994 | US5296656 Sound collecting and concentrating device for attaching to the back of multiple loudspeakers |
| 03/17/1994 | WO1994006256A1 Microphone packaging scheme |
| 03/17/1994 | WO1994006255A1 An ear microphone for insertion in the ear in connection with portable telephones or radios |
| 03/17/1994 | WO1994005372A1 Communication device for use with a respiratory unit |
| 03/17/1994 | WO1994005231A2 Ear based hearing protector/communication system |
| 03/17/1994 | DE4242034C1 TV receiver with magnetically supported loudspeakers - having inset elements of permanent magnet material engaging magnetic material pads on housing |
| 03/17/1994 | DE4230362A1 Acoustic engagement of partial region within total one - involving two carrier radiating loudspeakers, one carrier being modulated by audio signal |
| 03/17/1994 | DE4227555C1 Vorrichtung zur verstellbaren Befestigung eines Mikrofongalgens Device for adjustable attachment of a microphone boom |
| 03/15/1994 | US5295194 Multi-driver loudspeaker assembly |
| 03/15/1994 | US5295193 Device for picking up bone-conducted sound in external auditory meatus and communication device using the same |
| 03/15/1994 | US5293647 Multi-adjustable headset |
| 03/09/1994 | EP0586136A2 Electroacoustic transducer seal |
| 03/09/1994 | EP0586075A1 Loudspeaker systems |
| 03/08/1994 | US5293353 Method for manufacturing an acoustic sensor, and acoustic sensor obtained thereby, having a substantially non-detachable protective layer |
| 03/08/1994 | US5293008 Earwax trap for use with hearing-aid apparatus, and hearing-aid apparatus with such a trap |
| 03/08/1994 | US5292092 Retrofit bracket for wall mount speakers |
| 03/03/1994 | WO1994005133A1 Microphone and loudspeaker system |
| 03/03/1994 | WO1994005132A1 Device for the adjustable securing of a microphone boom |
| 03/03/1994 | DE4326631A1 Stereo loudspeaker with decorative surface - holds picture or other decorative panel on front of speaker housing to match interior decor of room |
| 03/03/1994 | DE4190521C1 Auf Körperschall ansprechendes Mikrofon On-borne sound appealing microphone |
| 03/02/1994 | EP0584972A2 Sound output system |
| 03/02/1994 | EP0584971A2 Sound output system |
| 03/02/1994 | CN2158161Y Imporved connector for mike |
| 03/02/1994 | CN1083300A Temperature compensation of sound pressure characterastics of electric sound inverter |
| 03/01/1994 | US5291559 Computer speaker |
| 02/24/1994 | DE4227696A1 Spherical loudspeaker housing consists of concrete - applied manually on inner surface of shape made of two half-shells, housing has irregular surface structure |
| 02/23/1994 | EP0583900A1 Improved headphone apparatus |
| 02/23/1994 | EP0583729A1 Plastic molding, and method and mold for manufacture thereof |
| 02/23/1994 | CN2157646Y Upper and lower steel mesh riveting device for microphone |
| 02/23/1994 | CN2157645Y Microphone mouthpiece |
| 02/23/1994 | CN2157644Y Remote-controlled microphone stand |
| 02/22/1994 | US5289355 Portable lighted microphone |
| 02/22/1994 | US5288953 Compressible stethoscope ear tip |
| 02/17/1994 | WO1994004009A1 Microphone mounting device |
| 02/17/1994 | WO1994004008A1 Sonic wave generator |
| 02/16/1994 | EP0582740A1 Method of fabricating a gas-permeable, metallic cover for an explosion-proof, pressure resistant casing |
| 02/16/1994 | CN2156641Y Composite body electrodynamic microphone |