| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 01/30/2002 | EP1175810A2 A loudspeaker having a dual chamber acoustical enclosure with two external vents and one internal vent |
| 01/30/2002 | EP1175809A1 Headset |
| 01/30/2002 | EP1175669A1 Systems and methods for passive pressure-compensation for acoustic transducers |
| 01/30/2002 | CN2474495Y Back force wire rewinding box |
| 01/30/2002 | CN1333992A Loudspeaker |
| 01/30/2002 | CN1333623A High feedback inhibited transmitting/receiving integrated earphone |
| 01/30/2002 | CN1333533A Loudspeaker |
| 01/30/2002 | CN1078776C Portable electronic device with associated earphone |
| 01/29/2002 | US6343135 Retractable speaker assembly for a partition |
| 01/29/2002 | US6343134 Loudspeaker and horn with an additional transducer |
| 01/29/2002 | US6343133 Axially propagating mid and high frequency loudspeaker systems |
| 01/29/2002 | US6343132 Loudspeaker |
| 01/29/2002 | US6343129 Elastomeric dielectric polymer film sonic actuator |
| 01/29/2002 | US6342831 Electronic apparatus |
| 01/29/2002 | US6342747 Wing type ultrasonic transducer |
| 01/29/2002 | US6341753 Fastening mechanism for speaker |
| 01/29/2002 | CA2169077C A personal hands free communications device |
| 01/28/2002 | CA2345775A1 Flat panel sound radiator and assembly system |
| 01/24/2002 | WO2002007478A2 Filter |
| 01/24/2002 | WO2002007477A2 Audio headset |
| 01/24/2002 | WO2002007476A2 Apparatus and methods for sound reproduction and recording |
| 01/24/2002 | WO2001078353A3 Method and apparatus for a hearing aid coupling system |
| 01/24/2002 | US20020009207 Connection method for microphone of mobile radio communication unit and connection structure thereof |
| 01/24/2002 | US20020009206 Microphone assembly |
| 01/24/2002 | US20020009203 Method and apparatus for voice signal extraction |
| 01/24/2002 | DE10034581A1 Multichannel microphone system has a three separate loudspeakers receiving phased signals |
| 01/24/2002 | DE10032666A1 Audiosystem für ein Kraftfahrzeug Audio system for a motor vehicle |
| 01/24/2002 | CA2414883A1 Filter |
| 01/23/2002 | EP1175126A1 Piezoelectric transducer |
| 01/23/2002 | EP1175124A2 Microphone protected against the noise plop |
| 01/23/2002 | EP1175123A2 Electric acoustic converter having a rear surface terminal |
| 01/23/2002 | EP1174001A2 Bending- wave panel loudspeakers |
| 01/23/2002 | EP1173100A1 Apparatus and method for tuning ultrasonic transducers |
| 01/23/2002 | CN2473841Y Speaker assembled piece capable of clearing secondary oscillation interference |
| 01/23/2002 | CN2473840Y Common radio earphone for left and right ear |
| 01/23/2002 | CN2473839Y Terminal and yoke seat combined structure for sound receive and transmit device |
| 01/23/2002 | CN1332560A Full duplex cordless earphone for mobile phone |
| 01/22/2002 | CA2109465C Sealing device for electro-acoustical transducers |
| 01/17/2002 | US20020006211 Directional microphone |
| 01/17/2002 | US20020006210 Loudspeaker-and-pre-stressed cabinet |
| 01/17/2002 | DE10032431A1 High-tone loudspeaker with bass oscillation damping for concert hall standard music reproduction |
| 01/17/2002 | CA2313971A1 Microphone wind shield and method for production thereof |
| 01/16/2002 | EP1173042A2 Compound loudspeaker drive unit having a magnet system |
| 01/16/2002 | EP1173040A2 Loudspeaker-and-pre-stressed cabinet |
| 01/16/2002 | EP1172258A1 Support for handfree-microphone |
| 01/16/2002 | EP1064822B1 Method and device for operating a microphone system, especially in a motor vehicle |
| 01/16/2002 | CN2472435Y Outdoor waterproof stone-like loudspeaker box |
| 01/16/2002 | CN1331852A Communication device |
| 01/16/2002 | CN1331553A Hydraulic piston type sound enclosure |
| 01/15/2002 | US6339649 Loudspeaker system with stackable loudspeaker units |
| 01/15/2002 | US6338395 Kapok loudspeaker enclosure damping material |
| 01/11/2002 | CA2352732A1 Compound loudspeaker drive unit having a magnet system |
| 01/10/2002 | WO2002003755A2 Audiosystem for an automobile |
| 01/10/2002 | WO2002003752A2 A directional microphone |
| 01/10/2002 | WO2002003751A1 Speaker system, and noise canceling device |
| 01/10/2002 | WO2002003746A2 A microphone assembly |
| 01/10/2002 | WO2002002964A1 Mechanical signal filter |
| 01/10/2002 | WO2001063964A3 Induction loop |
| 01/10/2002 | WO2001062040A3 Open back acoustic speaker module |
| 01/10/2002 | WO2001043489A3 Miniature microphone |
| 01/10/2002 | US20020003888 Longitudinally divided loudspeaker port with increased aerodynamic efficiency |
| 01/09/2002 | EP1170978A1 Acoustic matching material, method of manufacture thereof, and ultrasonic transmitter using acoustic matching material |
| 01/09/2002 | EP1169884A1 Flat surface loudspeaker and method for operating the same |
| 01/09/2002 | EP1169687A1 A vibrator and a method of controlling a vibrator |
| 01/09/2002 | EP1169663A1 Compact image display system for eyeglasses or other head-borne frames |
| 01/09/2002 | CN2471046Y Voice box with art decorative picture on its surface |
| 01/09/2002 | CN2471045Y Radiation-free earphone microphone |
| 01/09/2002 | CN2471044Y Loudspeaker |
| 01/09/2002 | CN2471032Y Television top-fitted heavy-bass voice-box |
| 01/08/2002 | US6337915 Earphone |
| 01/08/2002 | US6337908 Telephone handset, cordless telephone or mobile telephone for improving acoustic problems in a frequency range |
| 01/08/2002 | US6336615 Device for mounting speaker on display |
| 01/03/2002 | WO2002001911A1 Electro-acoustic transducer of ribbon type, loudspeaker system comprising such a transducer and loudspeaker arrangement comprising at least two such transducers. |
| 01/03/2002 | WO2002001910A2 Wearable audio equipment |
| 01/03/2002 | WO2001056329A3 Electroacoustic transducer having a moving coil and having elastic holding elements for the connecting leads of the moving coil |
| 01/03/2002 | US20020001392 Loudspeaker system and noise canceling apparatus |
| 01/03/2002 | US20020001391 Acoustic switch with electronic switching capability |
| 01/03/2002 | US20020001190 Lighted microphone cable connector |
| 01/03/2002 | DE10030216A1 Multiple microphone assembly for e.g. electronic stethoscope, performs individual switching of microphones having mutually different frequency response and/or directivity |
| 01/02/2002 | EP1166596A1 Audio/video system and method enabling a user to select different views and sounds associated with an event |
| 01/02/2002 | EP1166595A1 Geophone with mounted connectors |
| 01/02/2002 | EP0733217B1 Hydrophone carrier |
| 01/02/2002 | CN2469645Y Stringed instrument with microphone |
| 01/02/2002 | CN1329809A Loudspeaker |
| 01/02/2002 | CN1329808A Loudspeaker |
| 01/02/2002 | CN1329472A Sound pickup sensor |
| 01/02/2002 | CN1329456A Loadspeaker structure |
| 01/02/2002 | CN1329429A Electroacoustic changer with back terminal |
| 01/01/2002 | US6336219 Audiovisual reproduction system |
| 01/01/2002 | US6335974 Speaker system for television receiver with sound ducts and perforated panels |
| 01/01/2002 | CA2257242C Communications terminal having a single transducer for handset and handsfree receive functionality |
| 01/01/2002 | CA2157467C Fluid damped acoustic enclosure system |
| 12/27/2001 | WO2001058208A3 Support system for a portable device |
| 12/27/2001 | US20010055406 Audio speaker |
| 12/27/2001 | US20010055403 High frequency loudspeaker |
| 12/27/2001 | US20010055402 Loudspeakers |
| 12/27/2001 | US20010055397 Parametric virtual speaker and surround-sound system |
| 12/27/2001 | US20010055386 Method and apparatus for a hearing aid coupling system |
| 12/26/2001 | CN2468249Y Shared connector earphone |
| 12/26/2001 | CN2468248Y Multifunction earphone device |