| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 02/25/2004 | CN2604758Y Acoustic board |
| 02/25/2004 | CN1478370A Condenser microphone assembly |
| 02/25/2004 | CN1477899A Low frequency horn |
| 02/25/2004 | CN1477898A Full directional backload horn |
| 02/25/2004 | CN1140158C Loudspeakers comprising phase uncorrelated diffuse sound source |
| 02/24/2004 | US6697495 Portable computer speaker assembly |
| 02/24/2004 | US6697493 Process and arrangement for converting an acoustic signal to an electrical signal |
| 02/24/2004 | US6697302 Highly directive underwater acoustic receiver |
| 02/24/2004 | US6697300 Method and apparatus for determining the positioning of volumetric sensor array lines |
| 02/24/2004 | US6696632 Electric stringed musical instrument having frame body and percussion unit |
| 02/19/2004 | WO2004016041A1 Differential microphone |
| 02/19/2004 | WO2004016038A1 Delay network microphones with harmonic nesting |
| 02/19/2004 | WO2004016035A2 Piezoelectric loudspeaker |
| 02/19/2004 | WO2002076143A3 Solid angle cross-talk cancellation for beamforming arrays |
| 02/19/2004 | US20040032965 Headphone device |
| 02/19/2004 | US20040031891 Mounting bracket system |
| 02/18/2004 | EP1389082A1 Earmuff with earphone |
| 02/18/2004 | EP1142447B1 Loudspeaker |
| 02/18/2004 | CN2604027Y 无线麦克风 Wireless Microphone |
| 02/18/2004 | CN1476735A Loudspeaker having acoustic panel and electrical driver |
| 02/18/2004 | CN1476734A Speaker, speaker module, and electronic equipment using speaker module |
| 02/18/2004 | CN1476713A Microphone/earpiece device for mobile telephone, telephone, exchange or like |
| 02/18/2004 | CN1476598A Acoustic imaging system with non-focusing lens |
| 02/18/2004 | CN1476177A Receiver |
| 02/18/2004 | CN1139299C Piezoelectric electro-acoustic transducer |
| 02/18/2004 | CN1139163C Handfree device |
| 02/17/2004 | US6694180 Wireless biopotential sensing device and method with capability of short-range radio frequency transmission and reception |
| 02/17/2004 | US6694038 Acoustic device |
| 02/17/2004 | US6694032 Electret condenser microphone |
| 02/17/2004 | US6694028 Microphone array system |
| 02/17/2004 | US6694021 Telephone handset sanitary guard |
| 02/17/2004 | US6691832 Speaker |
| 02/17/2004 | CA2256485C Superdirective microphone arrays |
| 02/12/2004 | WO2004014103A1 The wireless circuit separating type wireless headphone |
| 02/12/2004 | WO2004014102A1 Acoustic light emitting module |
| 02/12/2004 | WO2004013977A2 Recreational bone conduction audio device, system |
| 02/12/2004 | WO2003103018A3 Portable electronic apparatus |
| 02/12/2004 | WO2003094571A3 Electro-dynamic planar loudspeakers |
| 02/12/2004 | WO2002093978A3 Sound transmitter and speaker |
| 02/12/2004 | US20040029530 Waterproof electroacoustic transducer and portable electronic device provided with the same |
| 02/12/2004 | US20040028246 Speaker device |
| 02/12/2004 | US20040028241 Audio data recorder |
| 02/12/2004 | US20040028240 Speaker system |
| 02/12/2004 | US20040028239 Vehicle accessory microphone assembly having a windscreen with hydrophobic properties |
| 02/12/2004 | US20040028238 System of sound transducers with controllable directional properties |
| 02/12/2004 | US20040028218 Headset |
| 02/12/2004 | US20040026585 Electro-dynamic loudspeaker mounting system |
| 02/12/2004 | US20040025755 Speaker-provided mounting table |
| 02/12/2004 | US20040025342 Surface with varying electrical or magnetic properties |
| 02/12/2004 | DE20315890U1 Elektroakustische Wandlereinheit für eine Freisprecheinrichtung Electroacoustic transducer unit for a hands-free |
| 02/12/2004 | DE10234066A1 Audiodatenrekorder Audio recorder |
| 02/12/2004 | CA2491874A1 Recreational bone conduction audio device, system |
| 02/11/2004 | EP1389032A2 Receiver unit |
| 02/11/2004 | EP1389031A2 Omnidirectional backload horn - type speaker |
| 02/11/2004 | EP1389030A2 Multifunction lighting fixture |
| 02/11/2004 | EP1388274A2 Acoustic member for a loudspeaker comprising a component having a selected frequency dependence and method of making same |
| 02/11/2004 | EP1082871B1 Molded in speaker grid |
| 02/11/2004 | CN1475094A 定向传声器 Directional microphone |
| 02/11/2004 | CN1475093A Electroacoustic transducer having contact holding means for spring contacts for electrical connection of transducer |
| 02/11/2004 | CN1475071A Headset |
| 02/11/2004 | CN1138447C Earpiece without impulse noise and loss by acoustic wave movement |
| 02/11/2004 | CN1138446C Electricity-sound transducer lead-wire terminal connection structure |
| 02/11/2004 | CN1138445C Sound device for equipment |
| 02/11/2004 | CN1138443C Speaker apparatus |
| 02/11/2004 | CN1138395C Full duplex cordless earphone for mobile phone |
| 02/10/2004 | US6690808 Personal earphone assembly for mounting upon eyeglasses |
| 02/10/2004 | US6690806 Various directional/omni-directional hearing aid microphone and housing structures |
| 02/10/2004 | US6690804 Lighted microphone cable indicator |
| 02/10/2004 | US6688421 Earmold for improved retention of coupled device |
| 02/05/2004 | WO2004012477A2 Wireless interactive headset |
| 02/05/2004 | WO2004012476A2 Electrical impedance based audio compensation in audio devices and methods therefor |
| 02/05/2004 | WO2004012447A1 Method of and system for controlling the operation of a video system |
| 02/05/2004 | WO2003072623A3 Soft molding compound |
| 02/05/2004 | WO2003026347A3 Loudspeaker systems |
| 02/05/2004 | US20040022408 Frame structure |
| 02/05/2004 | US20040022407 Film tensioning system |
| 02/05/2004 | US20040022406 Magnet arrangement for loudspeaker |
| 02/05/2004 | US20040022405 Thin enclosure electroacoustical transducing |
| 02/05/2004 | US20040022401 Information processing terminal, operation content notifying program and method for operation content notifying |
| 02/05/2004 | US20040022397 Microphone array having a second order directional pattern |
| 02/05/2004 | US20040021619 Head-mounted audio/video playback system |
| 02/05/2004 | US20040021402 Low acceleration sensitivity mounting structures for crystal resonators |
| 02/05/2004 | US20040020711 Omnidirectional backload horn-type speaker |
| 02/05/2004 | US20040020682 Pliable connector and manufacturing method thereof |
| 02/05/2004 | DE10334062A1 Electroacoustic transducer e.g. telephone loudspeaker, has grooves formed in ring-shaped frame supporting membrane for providing sound outlet openings |
| 02/05/2004 | DE10328380A1 Electroacoustic transducer for communications terminal has relatively small enclosed rear volume for allowing increased miniaturization |
| 02/05/2004 | DE10233456A1 Microphone has externally visible indicator of readiness of microphone for operation, e.g. several LED elements controlled by switching device so that only one desired color is externally visible |
| 02/05/2004 | DE10233444A1 Kopfhörer Headphone |
| 02/05/2004 | DE10203168B4 Lautsprecherbox Speaker |
| 02/05/2004 | CA2494661A1 Wireless interactive headset |
| 02/04/2004 | EP1387559A1 Information processing terminal and controlling method thereof |
| 02/04/2004 | EP1386519A2 Sound and vision system |
| 02/04/2004 | EP1386518A2 Two-way communication device |
| 02/04/2004 | EP1386415A1 Parametric virtual speaker and surround-sound system |
| 02/04/2004 | CN2602573Y Sound box decorated with luminescent diode |
| 02/04/2004 | CN1473450A Headphone |
| 02/04/2004 | CN1472985A Mounting table with loudspeaker |
| 02/04/2004 | CN1472982A Receiving unit of terminal device |
| 02/04/2004 | CN1137603C Play-back two-channel system for providing holophonic reproduction of sounds |
| 02/03/2004 | US6687381 Planar loudspeaker |