| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 02/08/1984 | EP0100080A2 Voice detection filter |
| 02/08/1984 | EP0099932A1 Speaker unit |
| 02/07/1984 | US4430593 Acoustic transducer |
| 02/07/1984 | US4429762 Horn loudspeakers of the sectorial diffusion type, and method for making said loudspeakers |
| 02/01/1984 | EP0099410A1 Full range planar induction loudspeaker |
| 01/31/1984 | US4429247 Piezoelectric transducer supporting and contacting means |
| 01/31/1984 | US4429194 Earphone |
| 01/31/1984 | US4429190 Continuous strip electret transducer array |
| 01/31/1984 | US4429181 Audio system |
| 01/31/1984 | US4429068 Rubber material |
| 01/18/1984 | EP0098421A2 Electric hearing aid |
| 01/17/1984 | US4426556 Electrodynamic loudspeaker |
| 01/17/1984 | US4426553 Vehicle loudspeaker arrangement with magnetic-field-sensitive device |
| 01/17/1984 | US4426552 Speaker distortion compensator |
| 01/17/1984 | CA1160732A1 Securing of lead wires to electro-acoustic transducers |
| 01/11/1984 | EP0098017A2 End weighted reed sound transducer |
| 01/10/1984 | US4425525 Ultrasonic transducer array shading |
| 01/10/1984 | US4425500 Firing range |
| 01/10/1984 | US4424881 Speaker assembly |
| 01/10/1984 | US4424880 Acoustic device for a head protector |
| 01/05/1984 | WO1984000092A1 Loudspeaker enclosures |
| 01/03/1984 | USRE31483 Loudspeaker enclosure with enhanced bass response |
| 01/03/1984 | US4424583 Pickup cartridge having a ribbed cantilever |
| 01/03/1984 | US4424416 Acoustic reproducing apparatus |
| 01/03/1984 | CA1159947A1 Ultrasonic array |
| 12/28/1983 | EP0097061A1 Loudspeaker enclosures |
| 12/27/1983 | US4423293 Microphone holding device |
| 12/27/1983 | CA1159374A1 Diaphragm suspension construction |
| 12/20/1983 | US4422182 Digital microphone |
| 12/20/1983 | US4421957 End-fire microphone and loudspeaker structures |
| 12/20/1983 | US4421200 Elliptically shaped transducer enclosure |
| 12/13/1983 | US4420706 Connector assembly for a piezoelectric transducer |
| 12/13/1983 | US4420061 Pentagonal speaker enclosure with a downward directed dynamic damping system |
| 12/06/1983 | US4419545 Electret transducer |
| 11/29/1983 | US4418248 Dual element headphone |
| 11/29/1983 | US4418247 Electrodynamic transducer |
| 11/29/1983 | US4417714 Hanging device mounting system for devices such as speaker enclosures |
| 11/24/1983 | WO1983004127A1 Improvements relating to focussing apparatus |
| 11/16/1983 | EP0094183A2 Tunable stethoscope |
| 11/08/1983 | US4413703 Bass-reflex type speaker system |
| 11/02/1983 | EP0092822A2 Ear microphone |
| 11/01/1983 | US4413198 Piezoelectric transducer apparatus |
| 11/01/1983 | US4413162 Moving coil transducers using multiple-stranded coils |
| 10/27/1983 | WO1983003733A1 Oto-laryngeal communication system |
| 10/26/1983 | EP0092051A2 Electroacoustic transducer with cylindrical housing |
| 10/26/1983 | EP0092045A2 Electroacoustic transducer with support |
| 10/25/1983 | US4412106 High fidelity stereophonic reproduction system |
| 10/25/1983 | US4412097 Variable-directivity microphone device |
| 10/18/1983 | US4410975 Stereophonic pick-up cartridge |
| 10/18/1983 | US4410772 Superminiature microphone device |
| 10/18/1983 | US4410770 Directional microphone |
| 10/18/1983 | US4410374 Steel having excellent vibration attenuation performance and method of manufacturing the same |
| 10/18/1983 | US4410064 Bass response speaker housing and method of tuning same |
| 10/18/1983 | US4410063 Loudspeaker system |
| 10/12/1983 | EP0091182A2 Acoustic transducers |
| 10/11/1983 | US4409681 Transducer |
| 10/11/1983 | US4409442 Headphone |
| 10/11/1983 | US4408678 Loudspeaker enclosure |
| 10/11/1983 | US4408372 Coupler |
| 10/05/1983 | EP0090430A2 Compound speaker system |
| 10/04/1983 | CA1154861A1 Ultrasonic transducer with a piezoelectric plastic receiving layer |
| 10/04/1983 | CA1154690A1 Digitally driven combination coils for electrodynamic acoustical transducers |
| 09/27/1983 | US4406096 Articular pole assembly capable of winding |
| 09/20/1983 | US4404885 Microphone mount for bass fiddle |
| 09/15/1983 | WO1983003181A1 Electroacoustic converter |
| 09/14/1983 | EP0088569A2 Multiple beam lens transducer for sonar systems |
| 09/14/1983 | EP0088154A1 Speech stimulating device |
| 09/14/1983 | EP0020704B1 Electroacoustic assembly |
| 09/13/1983 | US4404670 Pickup arm retainer for video disc cartridge |
| 09/13/1983 | US4404489 Acoustic transducer with flexible circuit board terminals |
| 09/13/1983 | US4404434 Collapsible stereophone |
| 09/07/1983 | EP0087908A1 Electro-acoustic calling devices |
| 09/06/1983 | US4403120 Earphone |
| 09/06/1983 | US4403112 Phase shift low frequency loudspeaker system |
| 09/01/1983 | WO1983003022A1 Improvements in pianos |
| 08/31/1983 | EP0086801A1 Loudspeaker horn |
| 08/30/1983 | US4401911 Active suspension piezoelectric polymer transducer |
| 08/30/1983 | US4401859 Directional microphone with high frequency selective acoustic lens |
| 08/30/1983 | US4401857 Multiple speaker |
| 08/17/1983 | EP0085997A2 Acoustic transducer |
| 08/16/1983 | US4399334 Speaker unit for headphones |
| 08/16/1983 | US4399328 Direction and frequency independent column of electro-acoustic transducers |
| 08/16/1983 | US4399327 Variable directional microphone system |
| 08/16/1983 | US4398619 Loudspeaker cabinet |
| 08/10/1983 | EP0085496A2 Transducer supporting and contacting means |
| 08/10/1983 | EP0085194A1 Electro-acoustical converter |
| 08/09/1983 | US4398116 Transducer for electronic focal scanning in an ultrasound imaging device |
| 08/04/1983 | WO1983002708A1 Full range planar induction loudspeaker |
| 08/04/1983 | WO1983002707A1 Speaker unit |
| 08/02/1983 | US4397013 Cantilever and phonograph pickup cartridge including said cantilever |
| 08/02/1983 | US4396807 Microphone mounting device |
| 08/02/1983 | US4396800 Microphone switching device |
| 08/02/1983 | US4395814 Acoustic vibrating element of graphite and method of manufacturing same |
| 07/27/1983 | EP0084363A1 Head phone ear cushion |
| 07/27/1983 | EP0084362A2 Ambient noise compensated close-talking microphone |
| 07/26/1983 | US4395593 Acoustic differential digital coder |
| 07/26/1983 | US4395079 Plastic molded mesh screen covering for audio cabinets |
| 07/26/1983 | CA1150815A1 Parametric array doppler sonar apparatus |
| 07/21/1983 | WO1983002539A1 Loudspeaker enclosure and waveform energy reflector |
| 07/12/1983 | US4393487 Stylus cartridge |