| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 10/22/1997 | EP0801785A1 Industrial headset |
| 10/22/1997 | CN2265653Y Bass loudspeaker casing |
| 10/22/1997 | CN2265652Y Sound box used for travelling |
| 10/16/1997 | WO1997037593A1 Ear tips having a plurality of ear contacting surfaces |
| 10/16/1997 | DE19614233A1 Low-frequency range loudspeaker housing |
| 10/16/1997 | DE19613815A1 Head mount support, especially for telephone handset |
| 10/15/1997 | CN2265049Y Telephone handset with neck support |
| 10/14/1997 | US5677964 Earphone |
| 10/14/1997 | US5677961 Connecting element for speaker elements |
| 10/14/1997 | US5677679 Sound device for message decoder |
| 10/14/1997 | US5676353 Hydraulic lever actuator |
| 10/09/1997 | WO1997037513A1 Device for electroacoustic diffusion, with diaphragms, spiders and horns of balsa wood or mixtures thereof |
| 10/09/1997 | WO1997037511A1 High-quality sound reproduction system |
| 10/08/1997 | EP0800331A2 Integrated microphone/amplifier unit, and amplifier module therefor |
| 10/08/1997 | EP0800330A2 Loudspeaker system and sound producing apparatus |
| 10/08/1997 | CN2264454Y Hi-Fi speaker |
| 10/08/1997 | CN1161628A Artificial agate loudspeaker housing, and method for producing same |
| 10/08/1997 | CN1161627A Three-D, full information natural sound field loudspeaker housing, and method for designing same |
| 10/08/1997 | CN1161626A Loudspeaker housing effectively inhibiting stationary wave and harmful resonance, the method for mfg. same |
| 10/07/1997 | US5675660 Apparatus for protecting microphones |
| 10/07/1997 | US5675658 Active noise reduction headset |
| 10/07/1997 | US5675655 Sound input apparatus |
| 10/07/1997 | US5675556 Hydrophone structure and method |
| 10/04/1997 | CA2173373A1 Microphone mounting arm assembly |
| 10/02/1997 | WO1997036455A1 Speaker having improved sound square, sound bank, sound angle, sound wedge and sound radiators |
| 10/02/1997 | WO1997036454A1 Process and arrangement for converting an acoustic signal to an electrical signal |
| 10/02/1997 | DE19612503A1 Electroacoustic converter module for sonar module |
| 10/02/1997 | DE19612068A1 Verfahren und Anordnung zum Umwandeln eines akustischen Signals in ein elektrisches Signal Method and apparatus for converting an acoustic signal into an electrical signal |
| 10/01/1997 | EP0798164A2 Speaker |
| 10/01/1997 | CN2263857Y Mouthpiece high-efficient sterilizing protector |
| 10/01/1997 | CN2263856Y Mouthpiece sterilizing equipment |
| 09/30/1997 | US5673329 Omni-directional loudspeaker system |
| 09/30/1997 | US5673325 Noise cancellation apparatus |
| 09/30/1997 | US5673236 Underwater acoustic projector |
| 09/24/1997 | EP0796487A1 High-gain directional transducer array |
| 09/24/1997 | EP0533810B1 Microwave antennas |
| 09/24/1997 | CN2263427Y Protecting cover for earhone wire |
| 09/23/1997 | US5671191 Variable coupler fiber optic sensor hydrophone |
| 09/18/1997 | WO1997034441A1 Process and device for transmitting sound |
| 09/18/1997 | CA2248019A1 Process and device for transmitting sound |
| 09/17/1997 | EP0796034A2 Piezoelectric acoustic transducer |
| 09/17/1997 | EP0796032A2 Plastic grills for loudspeakers |
| 09/17/1997 | CN1159724A Method for making ceramic casing of loudspeaker |
| 09/17/1997 | CN1035917C Microphone of video camera |
| 09/16/1997 | US5668883 Headphone apparatus including an equalizer system having an open loop characteristic with a rising slope outside the cancellation band |
| 09/16/1997 | US5668882 Notebook computer speakers |
| 09/11/1997 | DE19609543A1 Angle drum/angle resonator e.g. for loudspeaker housing |
| 09/10/1997 | EP0794414A2 Fiber optic hydrophone having rigid mandrel |
| 09/09/1997 | US5666433 Microphone & loudspeaker system |
| 09/09/1997 | US5664752 Direction adjustable mounting fittings |
| 09/07/1997 | CA2171118A1 Loudspeaker system and enclosure |
| 09/04/1997 | WO1997032450A1 Amplified bicycle sound system |
| 09/04/1997 | WO1997032449A1 Sound reproducing array processor system |
| 09/04/1997 | CA2248267A1 Amplified bicycle sound system |
| 09/03/1997 | EP0793217A2 Hydrophone cover |
| 09/03/1997 | EP0793216A2 Pressure chamber driver |
| 09/03/1997 | EP0792568A1 Noise cancellation apparatus |
| 09/03/1997 | EP0792567A1 Noise cancellation headset for use with stand or worn on ear |
| 09/03/1997 | EP0792566A1 Loudspeaker-lamp combination |
| 09/03/1997 | EP0792547A1 A flexible microphone boom |
| 09/03/1997 | EP0578752B1 Inconspicuous communication method utilizing remote electromagnetic drive |
| 09/03/1997 | CN2261707Y Assembled cylindric air-cushion speaker box |
| 09/03/1997 | CN1158688A Bandpass woofer and method |
| 09/03/1997 | CN1158687A Ported loudspeaker system and method with reduced air turbulence |
| 09/03/1997 | CN1158535A Speakers system of television |
| 09/02/1997 | US5664021 Microphone system for teleconferencing system |
| 09/02/1997 | US5664020 Compact full-range loudspeaker system |
| 09/02/1997 | US5664014 Two-way communications earset |
| 09/02/1997 | US5663534 Motor vehicle loudspeaker installation housing |
| 08/28/1997 | WO1997030634A1 In-ear-canal audio receiver and stethoscope having the same |
| 08/28/1997 | WO1997030605A1 Earmuff |
| 08/28/1997 | CA2257790A1 In-ear-canal audio receiver and stethoscope having the same |
| 08/27/1997 | EP0791405A2 Vibration actuator for pager |
| 08/27/1997 | EP0791279A1 Loudspeaker system with controlled directional sensitivity |
| 08/26/1997 | US5661271 Acoustic speaker enclosure having a stacked construction |
| 08/26/1997 | US5661270 Sound capturing device |
| 08/21/1997 | WO1997030564A1 Electronic acoustic device |
| 08/21/1997 | WO1997029931A1 Speaker support bar and sound chamber above vehicle headliner |
| 08/21/1997 | DE19706257A1 Omnidirectional sound-system |
| 08/20/1997 | EP0789980A1 Global sound microphone system |
| 08/20/1997 | CN1157544A Microphone |
| 08/20/1997 | CA2197534A1 Vibration actuator for pager |
| 08/19/1997 | US5659620 Ear microphone for insertion in the ear in connection with portable telephone or radios |
| 08/19/1997 | US5659157 7th order acoustic speaker |
| 08/19/1997 | US5659156 Earmolds for two-way communications devices |
| 08/19/1997 | US5659155 Acoustical transducer enclosure |
| 08/19/1997 | US5658656 Use of materials comprising microbubbles as acoustical barriers |
| 08/14/1997 | WO1997029614A1 Directional microphone utilizing spaced-apart omni-directional microphones |
| 08/14/1997 | DE19605130A1 Omnidirectional electroacoustic radiator |
| 08/13/1997 | EP0687403B1 Fluid damped acoustic enclosure system |
| 08/12/1997 | US5657392 Multi-way speaker with a cabinet defining a midrange driver pyramidal compartment |
| 08/12/1997 | US5656779 Apparatus and method for producing structural and acoustic vibrations |
| 08/07/1997 | WO1997028129A1 Aminoheterocyclic derivatives as antithrombotic or anticoagulant agents |
| 08/06/1997 | EP0787415A1 Multiple pulse stimulation |
| 08/06/1997 | CN1156388A Portable loudspeaker/directional microphone peripheral |
| 08/06/1997 | CN1035589C Integrated diver face mask and ultrasound underwater voice communication apparatus |
| 08/05/1997 | US5655026 Ear receiver |
| 07/31/1997 | WO1997027722A1 Communications headset |
| 07/31/1997 | WO1997027721A1 Headset and method for a headset |
| 07/31/1997 | CA2244255A1 Headset and method for a headset |