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Your search returned 348 patents.
( 381/1 in Current US Classification ) |
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| 1 2 3 4 |
| Patent ID | Title | Date Filed |
| 6711268 | Automatic stereo/monaural headphone
| May 4, 2001 |
| 6707917 | Monaural and stereo audio signal control system
| June 9, 1999 |
| 6700980 | Method and device for synthesizing a virtual sound source
| May 5, 1999 |
| 6690799 | Stereo signal processing apparatus
| June 6, 2000 |
| 6683962 | Method and system for driving speakers with a 90 degree phase shift
| December 21, 1998 |
| 6683959 | Stereophonic device and stereophonic method
| September 18, 2000 |
| 6668061 | Crosstalk canceler
| November 18, 1998 |
| 6658310 | Method of entering audio signal, method of transmitting audio signal, audio signal transmitting apparatus, and audio signal receiving and reproducing apparatus
| November 30, 1999 |
| 6658116 | Stereo radio receiver
| August 12, 1998 |
| 6643375 | Method of processing a plural channel audio signal
| November 4, 1998 |
| 6636608 | Pseudo-stereo circuit
| November 3, 1998 |
| 6633645 | Automatic telephone switch for hearing aid
| August 7, 2002 |
| 6621906 | Sound field generation system
| April 27, 2001 |
| 6618486 | Controller for FM 412 multiplex power regulation
| May 2, 2001 |
| 6614910 | Stereo sound expander
| July 16, 1999 |
| 6608902 | Stereo signal separation circuit and application thereof
| February 7, 1998 |
| 6606388 | Method and system for enhancing audio signals
| February 17, 2000 |
| 6597791 | Audio enhancement system
| December 15, 1998 |
| 6587565 | System for improving a spatial effect of stereo sound or encoded sound
| October 6, 1997 |
| 6584202 | Method and device for reproducing a stereophonic audiosignal
| May 30, 2000 |
| 6546105 | Sound image localization device and sound image localization method
| November 1, 1999 |
| 6522751 | Stereophonic signal processing apparatus
| January 29, 2001 |
| 6519344 | Audio system
| September 29, 1999 |
| 6507657 | Stereophonic sound image enhancement apparatus and stereophonic sound image enhancement method
| May 15, 1998 |
| 6504934 | Apparatus and method for localizing sound image
| January 22, 1999 |
| 6504933 | Three-dimensional sound system and method using head related transfer function
| November 18, 1998 |
| 6498857 | Method of synthesizing an audio signal
| June 18, 1999 |
| 6498856 | Vehicle-carried sound reproduction apparatus
| May 8, 2000 |
| 6473497 | Digital telephone set
| December 10, 1998 |
| 6470087 | Device for reproducing multi-channel audio by using two speakers and method therefor
| October 8, 1997 |
| 6449368 | Multidirectional audio decoding
| March 14, 1997 |
| 6442277 | Method and apparatus for loudspeaker presentation for positional 3D sound
| November 19, 1999 |
| 6424719 | Acoustic crosstalk cancellation system
| July 29, 1999 |
| 6385320 | Surround signal processing apparatus and method
| December 14, 1998 |
| 6360200 | Process for reducing redundancy during the coding of multichannel signals and device for decoding redundancy-reduced multichannel signals
| April 2, 1998 |
| 6356639 | AUDIO DECODING APPARATUS, SIGNAL PROCESSING DEVICE, SOUND IMAGE LOCALIZATION DEVICE, SOUND IMAGE CONTROL METHOD, AUDIO SIGNAL PROCESSING DEVICE, AND AUDIO SIGNAL HIGH-RATE REPRODUCTION METHOD USED FOR AUDIO VISUAL EQUIPMENT
| April 10, 1998 |
| 6307941 | System and method for localization of virtual sound
| July 15, 1997 |
| 6292570 | Surround sound
| February 9, 1999 |
| 6285767 | Low-frequency audio enhancement system
| September 4, 1998 |
| 6282247 | Method and apparatus for digital compensation of radio distortion over a wide range of temperatures
| September 12, 1997 |
| 6281749 | Sound enhancement system
| June 17, 1997 |
| 6246772 | Wireless headphone/speakers sound field control circuit
| March 23, 1999 |
| 6243476 | Method and apparatus for producing binaural audio for a moving listener
| June 18, 1997 |
| 6192086 | Digital sub-systems and building blocks for a mostly digital low-cost BTSC compatible encoder
| January 14, 2000 |
| 6178245 | Audio signal generator to emulate three-dimensional audio signals
| April 12, 2000 |
| 6173061 | Steering of monaural sources of sound using head related transfer functions
| June 23, 1997 |
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