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