| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 04/14/1999 | EP0909077A2 Method and arrangement for improving leak tolerance of an earpiece in a radio device |
| 04/14/1999 | EP0847677B1 Inertial vibration transducers |
| 04/14/1999 | EP0847676B1 Inertial vibration transducers |
| 04/14/1999 | EP0847668B1 Loudspeakers with panel-form acoustic radiating elements |
| 04/14/1999 | CN2314537Y Marble body for speakers |
| 04/14/1999 | CN2314536Y Earphone with fixer |
| 04/14/1999 | CN2314535Y Cabient for audio-video equipments |
| 04/13/1999 | US5894119 Device for enabling listeners to preview music recordings |
| 04/13/1999 | US5894113 Method and apparatus for providing personalized light source and sound system |
| 04/13/1999 | CA2005351C Voice communication unit |
| 04/08/1999 | WO1999017586A1 Headset apparatus |
| 04/08/1999 | WO1999006990A3 Compact horn speaker |
| 04/08/1999 | WO1999004597A3 Pistonic motion, large excursion passive radiator |
| 04/08/1999 | DE19804315C1 Attachment device for fixing microphone to musical instrument |
| 04/08/1999 | DE19800135C1 Loudspeaker enclosure |
| 04/07/1999 | EP0907122A1 Power adapter having a speaker for an electronic device |
| 04/07/1999 | EP0906790A1 Vibration generator for reporting and portable communication equipment using the same |
| 04/07/1999 | EP0906684A1 Communications terminal having a single transducer for handset and handsfree receive functionality |
| 04/07/1999 | CN2313347Y Noval voice-box body |
| 04/07/1999 | CN2313346Y Noval voice-box |
| 04/07/1999 | CN2313345Y 万向振动传感器 Universal vibration sensor |
| 04/07/1999 | CN1213262A Acoustic noise reducing |
| 04/06/1999 | US5892184 Passive radiator and system comprising the passive radiator |
| 04/06/1999 | US5892183 Loudspeaker system having a bass-reflex port |
| 04/06/1999 | US5892182 Speaker enclosure |
| 04/06/1999 | CA2154340C Loudspeaker system |
| 04/06/1999 | CA2149687C Long-time balancing of omni microphones |
| 04/01/1999 | WO1999016286A1 Car radio system |
| 04/01/1999 | DE19737058C1 Visual display unit with flat display and loudspeaker arrangement |
| 03/31/1999 | EP0904985A1 Woofer arrangement under a vehicle seat |
| 03/31/1999 | EP0904672A1 Anti-eavesdropping device |
| 03/31/1999 | CN2312548Y Miniature loudspeaker |
| 03/31/1999 | CN2312547Y Horn for obtg. sound of desired frequency or directional characteristics |
| 03/30/1999 | US5890072 Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone |
| 03/30/1999 | US5889877 Cabinet for a loudspeaker |
| 03/30/1999 | US5889876 Hemispherical speaker system |
| 03/30/1999 | US5889875 Electroacoustical transducing |
| 03/30/1999 | US5889873 Piezoelectric acoustic transducer |
| 03/30/1999 | US5888439 Method of molding an acoustical cabinet grille frame |
| 03/30/1999 | US5887720 Earphone case |
| 03/25/1999 | WO1999014981A1 Microphone |
| 03/25/1999 | WO1999014980A2 A loudspeaker with lead wires extending through the magnetic assembly and integrated with an amplifier |
| 03/25/1999 | WO1998046043A3 Sound pickup device, specially for a voice station |
| 03/25/1999 | DE19742087A1 Car radio system, esp. with at least two loudspeakers |
| 03/24/1999 | EP0903056A1 Superdirective microphone arrays |
| 03/24/1999 | EP0903055A1 Method and apparatus for localization of an acoustic source |
| 03/24/1999 | EP0902943A1 Protective cover assembly having sound transmission characteristics |
| 03/24/1999 | CN1211893A 可调式耳机 Adjustable headset |
| 03/23/1999 | US5887071 Dipole speaker headrests |
| 03/23/1999 | US5887070 High fidelity insert earphones and methods of making same |
| 03/23/1999 | US5887068 Multi-driver in-phase bipolar array loudspeaker |
| 03/23/1999 | US5887066 Headphone apparatus |
| 03/23/1999 | US5886656 Digital microphone device |
| 03/23/1999 | US5886304 Omni-directional sound system |
| 03/23/1999 | CA2190665C Collapsible image derived differential microphone |
| 03/23/1999 | CA2157263C Baffled microphone assembly |
| 03/23/1999 | CA2149686C Directional microphone system |
| 03/18/1999 | WO1999013685A1 Sound-transmitting amusement device and method |
| 03/18/1999 | WO1999013681A2 Aerogels, piezoelectric devices, and uses therefor |
| 03/18/1999 | DE19815954A1 Loudspeaker box for bass frequencies |
| 03/18/1999 | DE19740423A1 Sound-wave transmission equipment via medium e.g. loudspeaker |
| 03/18/1999 | DE19738685C1 Modular loudspeaker system |
| 03/17/1999 | CN2311109Y Foot stool resonant speaker system |
| 03/17/1999 | CN2311108Y Combined wire sheath of signal wire joint for microphone |
| 03/17/1999 | CN1211154A Box body of agate loudspeaker box and its producing technology |
| 03/16/1999 | US5883966 Portable telephone with a speaker having an improved acoustic characteristic |
| 03/16/1999 | US5882309 Multi-row ultrasonic transducer array with uniform elevator beamwidth |
| 03/16/1999 | CA2132207C Dual element headphone |
| 03/11/1999 | WO1999012387A1 Loudspeakers |
| 03/11/1999 | WO1999011490A1 Trim panel comprising an integral acoustic system |
| 03/11/1999 | WO1998056209A3 Video-assisted apparatus for hearing impaired persons |
| 03/11/1999 | WO1998053638A3 Acoustic apparatus comprising an array of loudspeakers |
| 03/11/1999 | CA2297104A1 Trim panel comprising an integral acoustic system |
| 03/11/1999 | CA2297041A1 Loudspeakers |
| 03/10/1999 | EP0901308A2 Integral holder-connector for capacitor microphone |
| 03/10/1999 | EP0847673B1 Portable compact-disc player incorporating panel-form loudspeakers |
| 03/10/1999 | EP0847672B1 Packaging |
| 03/10/1999 | EP0847671B1 Personal computers |
| 03/10/1999 | EP0847670B1 Display screens incorporating loudspeakers |
| 03/10/1999 | EP0847669B1 Visual display means incorporating loudspeakers |
| 03/10/1999 | EP0847663B1 Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements |
| 03/10/1999 | EP0847662B1 Loudspeakers comprising panel-form acoustic radiating elements |
| 03/10/1999 | EP0847660B1 Greetings card or the like with loudspeaker |
| 03/10/1999 | EP0847659B1 Loudspeakers comprising panel-form acoustic radiating elements |
| 03/10/1999 | CN2310431Y Integrally shaped microphone tone head |
| 03/09/1999 | US5881161 Headphone |
| 03/09/1999 | US5881156 Portable, multi-functional, multi-channel wireless conference microphone |
| 03/09/1999 | US5881149 Portable communications device with wireless transmitter and detachable earpiece including a wireless receiver |
| 03/04/1999 | WO1999011098A1 Down-fill speaker for large scale sound reproduction system |
| 03/03/1999 | EP0847667B1 Noticeboards incorporating loudspeakers |
| 03/03/1999 | EP0847666B1 Panel-form loudspeakers |
| 03/03/1999 | CN2309677Y Overweight bass loudspeaker |
| 03/03/1999 | CN2309676Y Adjustable phase-reversing tube of speak |
| 03/03/1999 | CN2309675Y Honeycomb sound cavity overweight die speak |
| 03/02/1999 | US5878149 Loudspeaker having a yoke, magnet, cylindrical throat, and spacer plate configuration |
| 03/02/1999 | US5878148 Compression driver |
| 03/02/1999 | US5878147 Directional microphone assembly |
| 03/02/1999 | US5877460 Device for talking underwater |
| 02/25/1999 | WO1999009788A1 Hearing aid protective cover |
| 02/25/1999 | WO1999009785A1 Telephone with a receiver arousing bone-conduction and air-conduction hearing |