| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 09/26/2001 | EP1135967A2 Resonant bending wave panel-form loudspeaker |
| 09/26/2001 | EP1135966A2 Bending wave acoustic devices |
| 09/26/2001 | EP1135965A2 Waterproof housing cover for hospital bed |
| 09/26/2001 | EP1135063A1 Sound pickup sensor |
| 09/26/2001 | CN1314772A Lound speaker device |
| 09/25/2001 | US6295366 Aircraft headset |
| 09/25/2001 | US6295365 Acoustic sensor and electric stethoscope device incorporating the same therein |
| 09/20/2001 | WO2001069968A2 Adaptive microphone matching in multi-microphone directional system |
| 09/20/2001 | WO2001069966A1 Speaker box |
| 09/20/2001 | WO2001069965A1 Speaker cover |
| 09/20/2001 | WO2001069964A2 Acoustic switch with electronic switching capability |
| 09/20/2001 | WO2001069588A1 A method and a device for generating low frequency sound and use of the device |
| 09/20/2001 | WO2001067843A2 Port switch as for a hearing aid device |
| 09/20/2001 | US20010022847 Smart panel for decreasing noise in wide band frequency |
| 09/20/2001 | US20010022845 Microphone apparatus |
| 09/20/2001 | US20010022835 Speaker apparatus |
| 09/20/2001 | DE10061837A1 Valuation of treble sound pattern for head-set ear pieces, has tubular elements inclined or unevenly aligned to hearing path of earpiece |
| 09/19/2001 | EP1133895A1 Microphone array with high directivity |
| 09/19/2001 | EP0988775B1 Vibration transducers for resonant panel-form loudspeaker and loudspeaker with the same |
| 09/19/2001 | CN2449438Y 红外音频耳机 Infrared audio headset |
| 09/19/2001 | CN2449437Y Assembling structure of earphone, microphone and ear hanging device |
| 09/19/2001 | CN2449436Y Sound controlled microphone for intercom |
| 09/19/2001 | CN2449435Y Multi-section assembling type cone holder for loudspeaker |
| 09/19/2001 | CN2449434Y 耳机 Headphone |
| 09/19/2001 | CN2449433Y Microphone sound head |
| 09/19/2001 | CN1313721A Process for preparing material used to make up sound enclosure |
| 09/19/2001 | CN1071522C Transmitting/receiving apparatus for use in telecommunications |
| 09/18/2001 | US6292573 Portable communication device with collapsible speaker enclosure |
| 09/18/2001 | US6292565 Assembly including a phone cover |
| 09/18/2001 | US6292434 Method for forming a spherical wave by superposition of a plurality of limited plane waves |
| 09/18/2001 | US6292358 Portable computer having a movable loudspeaker unit |
| 09/18/2001 | CA2095124C Head set |
| 09/13/2001 | WO2001067811A1 Microphone structure |
| 09/13/2001 | WO2001067806A1 Folded sagnac sensor array |
| 09/13/2001 | WO2001067433A1 A method of improving the audibility of sound from a loudspeaker located close to an ear |
| 09/13/2001 | US20010021098 Keyboard and electronic apparatus |
| 09/13/2001 | US20010020389 Ultrasonic transceiver and vehicle's surrounding obstruction sensor |
| 09/13/2001 | DE10011732A1 Entertainment device has sound pipe with device that passes air in only one direction, which is from inside of housing to outside, opening with device for passing air in opposite direction |
| 09/13/2001 | DE10009847A1 Weather protector for microphone, has spherical end section provided with bore that receives sound pick=ups |
| 09/13/2001 | DE10008356A1 Vertical loudspeaker with cylindrical radiation pattern, has swivelable narrow housing with vertically-arranged mid-range and tweeter speaker driver types arranged in preset patterns in alternating and/or asymmetric manner on front plate |
| 09/12/2001 | CN2448038Y Semispherical speaker |
| 09/12/2001 | CN2448037Y Cord taking up earphone fixed on electrical appliance with sound source |
| 09/12/2001 | CN2448036Y Speaker with luminous device |
| 09/12/2001 | CN2448035Y Ultra-thin electromagnetic speaker |
| 09/12/2001 | CN2448034Y Synchronous sound diaphragm dust-proof cover structure |
| 09/12/2001 | CN2448033Y Hand-free receiver wire collector structure |
| 09/12/2001 | CN2448032Y Microphone self-switching microphone device with hand-free receiver |
| 09/12/2001 | CN2448031Y Dual-purpose microphone device with hand-free receiver |
| 09/12/2001 | CN2448030Y Microphone device with hand-free receiver |
| 09/12/2001 | CN1313020A Loudspeaker comprising resonant panel-form member |
| 09/11/2001 | US6289106 Cap and center pole apparatus and method of coupling |
| 09/11/2001 | US6287261 Focused ultrasound transducers and systems |
| 09/11/2001 | CA2097048C Multiple segment fiber optic hydrophone |
| 09/07/2001 | WO2001065897A1 In-wall speaker mounting apparatus |
| 09/07/2001 | WO2001065888A2 A system for accommodating primary and secondary audio signal |
| 09/07/2001 | WO2001065533A2 Acoustic diffuser free from resonance |
| 09/07/2001 | CA2401798A1 A system for accommodating primary and secondary audio signal |
| 09/06/2001 | US20010020131 Ultrasonic diagnosis system |
| 09/06/2001 | US20010019945 Device for implanting a microphone and a pressure compensating member in a telephone watch |
| 09/06/2001 | US20010019617 Bending wave acoustic device |
| 09/06/2001 | US20010019616 Self-locking mold cure system |
| 09/06/2001 | US20010019516 Speaker direction detection circuit and speaker direction detection method used in this circuit |
| 09/05/2001 | EP1130945A2 Electroacoustic transducer |
| 09/05/2001 | EP1130944A1 Implant device of a microphone and of an element for pressure compensation in a wrist-watch telepohne |
| 09/05/2001 | EP1130943A1 Loudspeaker assembly for motor vehicles |
| 09/05/2001 | EP1130881A1 Headset with ear attachment system |
| 09/05/2001 | EP1130880A1 Headset and head support for headset. |
| 09/05/2001 | EP1130040A1 Energetic copolyurethane thermoplastic elastomers |
| 09/05/2001 | EP0890291B1 Process and arrangement for converting an acoustic signal to an electrical signal |
| 09/05/2001 | EP0872153B1 Micromechanical microphone |
| 09/05/2001 | EP0862399A4 A device having rotatable legs |
| 09/05/2001 | CN2446738Y Combined artificial loudspeaker box |
| 09/05/2001 | CN1311974A Head phone |
| 09/05/2001 | CN1311942A Mobile communication unit with bone conduction speaker |
| 09/05/2001 | CN1311890A Heat dissipating device, especially for high performance ultrasonic transducers |
| 09/05/2001 | CN1311506A Electroacoustic transducer |
| 09/05/2001 | CN1311463A Device for mounting a microphone and a pressure compensation element on a telephone wrist watch |
| 09/04/2001 | US6285772 Noise control device |
| 09/04/2001 | US6285771 Directional microphone assembly |
| 09/04/2001 | US6285770 Noticeboards incorporating loudspeakers |
| 09/04/2001 | US6285757 Interactive devices and methods |
| 09/04/2001 | US6285384 Printer having circuit for providing improved printing quality |
| 09/04/2001 | US6283437 Foot device |
| 09/02/2001 | CA2330713A1 Energetic copolyurethane thermoplastic elastomers |
| 08/30/2001 | WO2001063970A2 Acoustic transducer with improved acoustic damper |
| 08/30/2001 | WO2001063967A1 Multi-channel headphones |
| 08/30/2001 | WO2001063966A2 Device for fixing earphones and/or mini-microphones |
| 08/30/2001 | WO2001063964A2 Induction loop |
| 08/30/2001 | WO2001063888A1 Wireless headset with automatic power control |
| 08/30/2001 | US20010017929 Cap and center pole apparatus and method of coupling |
| 08/30/2001 | US20010017927 Flat panel loudspeaker arrangement |
| 08/30/2001 | US20010017926 Headset with ear attachment system |
| 08/30/2001 | US20010017925 Headset and head support for headset |
| 08/30/2001 | US20010017924 Loudspeakers with panel-form acoustic radiating elements |
| 08/30/2001 | US20010017923 Electroacoustic transducer |
| 08/30/2001 | US20010017917 Connector for printed circuit and equipment which includes it |
| 08/29/2001 | EP1128489A1 Connector for printed circuit and equipment which includes it |
| 08/29/2001 | EP1127476A1 Point source speaker system |
| 08/29/2001 | EP1127475A1 An electroacoustic communications unit |
| 08/29/2001 | CN2445546Y Device used on earphone for insulating electromagnetic wave |