Patents for H04R 5 - Stereophonic arrangements (11,598) |
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01/05/2000 | EP0968099A1 Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements |
01/05/2000 | EP0872155A4 Portable speakers with enhanced low frequency response |
01/05/2000 | DE19629704C2 Tragbarer CD-Player mit Lautsprechern Portable CD player with speakers |
01/05/2000 | CN2357456Y Earphone surrounding sound device for movie |
01/04/2000 | US6011852 Audio power amplifier device for micro-computers |
01/04/2000 | US6011686 Audio devices for a portable computer |
01/04/2000 | US6011526 Display apparatus operable in synchronism with a movement of the body of a viewer |
12/28/1999 | US6009182 Down-fill speaker for large scale sound reproduction system |
12/28/1999 | US6009179 Method and apparatus for electronically embedding directional cues in two channels of sound |
12/28/1999 | US6009178 Method and apparatus for crosstalk cancellation |
12/22/1999 | EP0966178A2 Digital electro-acoustic transducer |
12/22/1999 | EP0880869A4 Portable speakers with phased arrays |
12/22/1999 | CN2355507Y Earphone with encirclement effection |
12/21/1999 | US6005642 Television receiver with doors for its display screen which doors contain loudspeakers |
12/21/1999 | US6003766 Vending machine |
12/14/1999 | US6002775 Method and apparatus for electronically embedding directional cues in two channels of sound |
12/14/1999 | US6001072 Apparatus for imparting acoustic vibrational bodily sensation |
12/08/1999 | EP0852104A4 Acoustically transparent earphones |
12/02/1999 | WO1999062294A1 Panel-form loudspeaker |
12/02/1999 | WO1999062293A1 Speaker apparatus and television set |
12/02/1999 | CA2332824A1 Panel-form loudspeaker |
11/30/1999 | US5992805 Media master apparatus |
11/25/1999 | WO1999060816A1 Head worn entertainment and/or communication device |
11/25/1999 | WO1999042848A3 Capacitance detection system and method |
11/25/1999 | DE19804995A1 Modified electronic low frequency emphasis circuit for audio applications |
11/25/1999 | CA2332841A1 Head worn entertainment and/or communication device |
11/23/1999 | US5991727 Voice reproducing apparatus for personal use |
11/23/1999 | US5991422 Structural improvements of earphone signal cord |
11/23/1999 | US5988314 Sound output system |
11/17/1999 | EP0890293A4 Sampled chamber transducer with enhanced low frequency response |
11/17/1999 | EP0885546A4 Wearable audio system with enhanced performance |
11/17/1999 | EP0852105A4 Earphones with eyeglass attachments |
11/16/1999 | US5987147 Sound collector |
11/10/1999 | EP0847661B1 Acoustic device |
11/10/1999 | CN1234715A Digital electroacoustic transducer |
11/10/1999 | CN1234678A Multi-function audio system and method of controlling the same |
11/09/1999 | US5983191 Method and apparatus for automatically compensating tone color |
11/09/1999 | US5983087 Distributed digital signal processing for vehicle audio systems |
11/09/1999 | US5982904 Wireless headset |
11/09/1999 | US5982537 Speaker apparatus with a picture projecting screen |
11/09/1999 | CA2177234C Howling phenomena removing apparatus for video display appliances |
11/04/1999 | WO1999046958A8 Personal sound masking system |
11/02/1999 | US5978211 Stand structure for flat-panel display device with interface and speaker |
11/02/1999 | CA2158734C Passive surround sound circuit |
10/27/1999 | EP0951800A1 Six-axis surround sound processor with automatic balancing and calibration |
10/27/1999 | EP0951799A1 Audio system comprising audio signal processing circuit |
10/27/1999 | EP0689756B1 Plural-channel sound processing |
10/20/1999 | CN2344936Y Universal earphone with single or double track |
10/19/1999 | US5970161 Speaker system for a video monitor and a video monitor equipped with a speaker system |
10/19/1999 | US5970153 Stereo spatial enhancement system |
10/13/1999 | CN2343731Y Family movie theatre surrounding stereo sound |
10/12/1999 | US5966453 Speaker system for use in an automobile vehicle |
10/07/1999 | WO1999025152A3 Interactive devices and methods |
10/07/1999 | DE19813804A1 Stereo sound transmitter with phase-controlled directive efficiency |
10/06/1999 | EP0947121A1 Device including a built-in electroacoustic transducer for optimum speech reproduction |
10/06/1999 | CN2342537Y Digit control household sound equipment |
10/06/1999 | CN1230803A Jack reproducing apparatus and data communication system |
09/30/1999 | WO1999049574A1 Audio signal processing method and apparatus |
09/30/1999 | DE19913557A1 Mini Disc (MD) digital audio recording and reproducing system jack socket |
09/29/1999 | CN2341335Y Computer digital all-site reducer |
09/29/1999 | CN2341334Y Multifunctional stereo wireless earphone radio |
09/29/1999 | CN2341331Y Small size speaker box matched with small size bass box |
09/29/1999 | CN1230331A Recording and play-back two-channel system for providing holophonic reproduction of sounds |
09/29/1999 | CN1045360C Video matrix stereo audio recording and playing system |
09/28/1999 | US5960090 Process and device for wireless transmission |
09/28/1999 | US5959597 Image/audio reproducing system |
09/28/1999 | US5957553 Audiovisual equipment and casing thereof and method of producing the same |
09/28/1999 | CA2185593C Portable loudspeaker/directional microphone peripheral |
09/23/1999 | WO1999048327A1 In-home theater surround sound speaker system |
09/23/1999 | WO1999048324A1 Headset for aircraft |
09/23/1999 | CA2324224A1 In-home theater surround sound speaker system |
09/22/1999 | EP0943225A1 Power supply for microphone |
09/22/1999 | EP0886990B1 Process and device for transmitting sound |
09/22/1999 | CN1229542A Acoustic heterodyne device and method |
09/21/1999 | US5956411 Personal multimedia speaker system |
09/16/1999 | WO1999046958A1 Personal sound masking system |
09/16/1999 | WO1999004498A3 Method and apparatus for encoding and decoding multiple audio channels at low bit rates |
09/16/1999 | DE19901376A1 Multi-function audio system can perform a number of functions yet forms unit that allows hands-free telephone operation |
09/14/1999 | US5953434 Headband with audio speakers |
09/14/1999 | US5952619 In-ceiling loudspeaker |
09/14/1999 | US5951141 Head mounted illumination device |
09/08/1999 | EP0746393A4 Dual output multi function interface device for audio systems |
09/08/1999 | CN2337733Y Earphone for two-persons |
09/08/1999 | CN2337732Y Imitating coaxial loudspeaker sounder resonator |
09/02/1999 | WO1999019854A9 Method and apparatus for sending presence messages |
09/02/1999 | WO1999019820A9 Electronic audio connection system and methods for providing same |
09/01/1999 | CN2336534Y Loudspeaker with wave band channel |
08/31/1999 | US5946403 Directional microphone for computer visual display monitor and method for construction |
08/31/1999 | US5946343 Digital wireless speaker system |
08/26/1999 | WO1999042848A2 Capacitance detection system and method |
08/26/1999 | WO1999042847A1 Impedance detection apparatus and method |
08/24/1999 | US5943430 Television stereophonic audio system |
08/19/1999 | WO1999041831A1 Apparatus for improved amplification of audio signals |
08/19/1999 | WO1999019804A3 Method and apparatus for sending and receiving lightweight messages |
08/18/1999 | EP0936839A1 System for providing sound distinctions and method therefor |
08/18/1999 | EP0936837A2 Electroacoustic transducer of digital type |
08/17/1999 | CA2202648C Television receiver with doors for its display screen which doors contain loudspeakers |
08/12/1999 | WO1999040756A1 Headphone apparatus |
08/05/1999 | WO1999039546A1 Virtual surround sound headphone loudspeaker output system |
08/05/1999 | WO1998059430A8 Device and method for video recording with audio background |