| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 03/22/2000 | CN2370637Y Cophased drive closed loudspeaker |
| 03/22/2000 | CN1050728C Loudspeaker system |
| 03/21/2000 | US6041130 Headset with multiple connections |
| 03/21/2000 | US6040517 Rhythmic tone generator |
| 03/16/2000 | WO2000014999A1 Acoustical speaker housing and methods of installation |
| 03/16/2000 | WO2000014997A1 Loudspeaker device |
| 03/16/2000 | WO2000014996A1 Diffuser panel with built-in speaker arrangement and methods of installation |
| 03/16/2000 | WO2000014720A1 Electro-acoustic musical instrument |
| 03/16/2000 | WO2000007157A8 Protective mask communication devices and systems for use in hazardous environments |
| 03/16/2000 | CA2341602A1 Electro-acoustic musical instrument |
| 03/16/2000 | CA2340390A1 Diffuser panel with built-in speaker arrangement and methods of installation |
| 03/16/2000 | CA2340249A1 Acoustical speaker housing and methods of installation |
| 03/15/2000 | EP0986128A1 Method for forming a spherical wave by superposition of a plurality of limited plane waves |
| 03/15/2000 | EP0985327A1 Flush mounted uni-directional microphone |
| 03/15/2000 | CN2369436Y Adjustable ultrahigh frequency compensator |
| 03/15/2000 | CN1247662A Dual use speaker for both voice communication and signalling |
| 03/15/2000 | CN1247429A Sound reflector in hand set for controlling distance communicating tech. |
| 03/14/2000 | US6038329 Earphone device |
| 03/14/2000 | US6038328 Minimization of acoustic echo effects in a microphone boot |
| 03/14/2000 | US6038327 Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer |
| 03/14/2000 | US6038326 Loudspeaker and horn with an additional transducer |
| 03/14/2000 | US6035962 Easily-combinable and movable speaker case |
| 03/14/2000 | US6035961 Earphone with a soft, compressible housing and adjustable earpiece loop |
| 03/09/2000 | WO2000013464A1 Loudspeakers comprising a resonant panel-form member |
| 03/09/2000 | WO2000013462A1 High noise communication system |
| 03/09/2000 | DE19840375A1 Schallwand Baffle |
| 03/09/2000 | DE19839598A1 Mounting sleeve for ultrasonic transducer for inclined attachment to plate, e.g. for vehicle parking aid, has peripheral, essentially annular fitting whose outer surface height varies over its circumference |
| 03/09/2000 | CA2341867A1 Loudspeakers comprising a resonant panel-form member |
| 03/08/2000 | EP0984666A2 Hearing aId microphone and housing |
| 03/08/2000 | EP0984662A2 Waveguide electroacoustical transducing |
| 03/08/2000 | EP0984661A2 Transmitter-receiver having ear-piece type acoustic transducer part |
| 03/08/2000 | EP0984660A2 Transmitter-receiver having ear-piece type acoustic transducer part |
| 03/08/2000 | EP0984659A2 Acoustic panel |
| 03/08/2000 | EP0983711A1 Wireless open ear canal earpiece |
| 03/08/2000 | CN2368240Y Microphone sound-head seat forming two transmit channel |
| 03/07/2000 | US6035211 Dual use speaker for both voice communication and signalling |
| 03/07/2000 | US6035051 Sound apparatus |
| 03/07/2000 | US6034924 Folded sagnac sensor array |
| 03/02/2000 | WO1999046759A3 Real-time ambient sound transformation for architectural barriers |
| 03/01/2000 | EP0982732A1 Portable MP3 player having various functions |
| 03/01/2000 | EP0981928A2 Pane-form loudspeakers |
| 03/01/2000 | EP0981927A2 Acoustic apparatus comprising an array of loudspeakers |
| 03/01/2000 | CN2367041Y Inverted sound box with volume dynamic displaying function |
| 02/29/2000 | US6031926 Panel-form loudspeakers |
| 02/29/2000 | US6031924 Fixed mounting loudspeaker with removable chassis |
| 02/29/2000 | US6031922 Microphone systems of reduced in situ acceleration sensitivity |
| 02/29/2000 | US6031921 Loudspeaker unit |
| 02/29/2000 | US6031920 Coaxial dual-parabolic sound lens speaker system |
| 02/29/2000 | US6031919 Loudspeaker system and sound reproducing apparatus |
| 02/29/2000 | US6029769 Permeable aerodam to reduce wind noise |
| 02/24/2000 | WO2000010362A1 Audio device and headphone |
| 02/23/2000 | EP0980640A2 Wired open ear canal earpiece |
| 02/23/2000 | CN2365850Y Microphone with mercury automatic on-off |
| 02/23/2000 | CN2365849Y Improved fixing device of transmitter |
| 02/23/2000 | CN2365848Y 眼镜式耳机 Glasses Headphones |
| 02/23/2000 | CN1245628A Panel-form loadspeaker |
| 02/22/2000 | US6028947 Lightweight molded waveguide device with support infrastructure |
| 02/22/2000 | US6026928 Apparatus and method for reduced distortion loudspeakers |
| 02/17/2000 | WO2000008894A1 Infrared helmet |
| 02/17/2000 | WO2000008893A1 Head phone |
| 02/17/2000 | WO2000008630A1 Heat dissipating device, especially for high performance ultrasonic transducers |
| 02/17/2000 | DE19834414A1 Loudspeaker enclosure with transparent good looks combined with tonal brilliance is made entirely of safety glass and improves sound clarity through rigidity of its walls |
| 02/17/2000 | CA2338748A1 Head phone |
| 02/16/2000 | EP0979590A1 Loudspeaker systems |
| 02/16/2000 | CN2364650Y Ceramic loudspeaker box |
| 02/16/2000 | CN2364649Y Ultra-light miniature microphone |
| 02/16/2000 | CN2364648Y Earphone with receptacle |
| 02/16/2000 | CN1245005A Directed acoustic stick radiator |
| 02/16/2000 | CN1245004A Speaker device |
| 02/10/2000 | WO2000007409A1 Loudspeaker drive unit having a resonant panel-form member |
| 02/10/2000 | WO2000007408A1 Acoustic device using bending wave modes |
| 02/10/2000 | WO2000007157A1 Protective mask communication devices and systems for use in hazardous environments |
| 02/10/2000 | WO2000006309A2 Off-aperture electrical connection for ultrasonic transducer |
| 02/10/2000 | DE19919456A1 Baßreflexbox einer Radio-Soundanlage eines Personenkraftfahrzeuges Bass reflex box a radio sound system of a passenger vehicle |
| 02/10/2000 | DE19835373A1 Mikrophon-Windschutz und Verfahren zu dessen Herstellung Microphone windscreen, and process for its preparation |
| 02/10/2000 | CA2339130A1 Off-aperture electrical connection for ultrasonic transducer |
| 02/10/2000 | CA2338713A1 Loudspeaker drive unit having a resonant panel-form member |
| 02/10/2000 | CA2338690A1 Acoustic device using bending wave modes |
| 02/09/2000 | EP0978978A2 Telephone loudspeaker enclosure |
| 02/09/2000 | EP0978813A2 Microphone wind-protection device and method of fabrication |
| 02/09/2000 | EP0978188A1 Portable telephone with movable microphone unit |
| 02/09/2000 | EP0977677A1 Automobile sound producing device |
| 02/09/2000 | CN2363448Y Sound sensor connected with earphone |
| 02/09/2000 | CN2363447Y Loudspeaker casing |
| 02/09/2000 | CN1244093A Adapter for earphone and microphone |
| 02/09/2000 | CN1244092A Storage box for coiled earphone line |
| 02/08/2000 | US6023514 System and method for factoring a merged wave field into independent components |
| 02/08/2000 | US6021526 Hearing protection device |
| 02/08/2000 | CA2024826C Transducer enclosure |
| 02/03/2000 | WO2000005925A1 Miniature full range loudspeaker |
| 02/03/2000 | WO2000005924A1 Two-way communication earpiece |
| 02/03/2000 | WO2000005922A1 An anti-noise-electret pick-up |
| 02/03/2000 | WO2000005920A1 Digital loudspeaker |
| 02/03/2000 | DE19934260A1 Noise protection arrangement for microphone, esp. for wind noise protection |
| 02/03/2000 | DE19834878A1 Audio loudspeaker for use in automobile has bass reflex channel incorporated in loudspeaker cone for connecting automobile passenger space with space at rear of loudspeaker |
| 02/03/2000 | CA2304318A1 An anti-noise-electret pick-up |
| 02/02/2000 | EP0976299A1 Headset assembly |
| 02/02/2000 | EP0976200A1 Vehicular loudspeaker system |
| 02/02/2000 | EP0976117A1 Sounder |
| 02/02/2000 | EP0767949B1 Process and device for generating spherical waves in the ultrasound range |