| Patents for H04S 7 - Indicating arrangements; Control arrangements, e.g. balance control (4,080) |
|---|
| 06/14/1994 | CA1330200C Surround-sound system |
| 05/17/1994 | US5313014 Electronic musical instrument having sound image localization circuit |
| 05/11/1994 | WO1994010816A1 Methods and apparatus for producing directional sound |
| 05/11/1994 | WO1994010815A1 Method for generating three-dimensional sound |
| 04/26/1994 | US5307415 Surround processor with antiphase blending and panorama control circuitry |
| 04/19/1994 | US5305439 Method and apparatus for time-shared processing of different data word sequences |
| 04/19/1994 | US5305386 Apparatus for expanding and controlling sound fields |
| 04/05/1994 | US5301236 System for producing stereo-simulated signals for simulated-stereophonic sound |
| 03/22/1994 | US5297209 System for calibrating sound field |
| 03/17/1994 | WO1994001981A3 Adaptive audio systems and sound reproduction systems |
| 03/15/1994 | US5295189 Control voltage generator for surround sound processor |
| 03/03/1994 | WO1994005135A1 Music isolator |
| 02/10/1994 | DE4326746A1 Stereo loudspeaker vol. control equipment responsive to ambient noise - provides feedback from both audio channel amplifiers via adaptive digital filters for subtraction from noise microphone signal |
| 02/08/1994 | US5285503 Apparatus for reproducing sound field |
| 02/02/1994 | CN2155118Y Externally connecting level display of sounder |
| 02/02/1994 | CN2155117Y Portable digital control modulation station |
| 01/20/1994 | WO1994001981A2 Adaptive audio systems and sound reproduction systems |
| 01/18/1994 | US5280528 Band pass filter circuit for rear channel filtering in a surround processor |
| 12/28/1993 | US5274740 Decoder for variable number of channel presentation of multidimensional sound fields |
| 12/23/1993 | WO1993026134A1 Stereophonic sound reproduction device using several loudspeakers in each channel |
| 12/23/1993 | CA2137695A1 Strereophonic sound reproduction device using several loudspeakers in each channel |
| 12/21/1993 | US5272756 Method and apparatus for determining phase correlation of a stereophonic signal |
| 12/14/1993 | US5271063 Controls for a vehicle audio/video apparatus |
| 12/09/1993 | WO1993025015A1 Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels |
| 12/01/1993 | EP0571638A1 Acoustic equipment and method of displaying operating thereof |
| 11/30/1993 | US5266938 Method for calibrating a display and apparatus for implementing the same method |
| 11/16/1993 | US5263188 In a vehicle sound system |
| 11/16/1993 | US5263086 Audio accessory circuit |
| 11/09/1993 | US5261005 Sound field control device |
| 11/09/1993 | US5260920 Acoustic space reproduction method, sound recording device and sound recording medium |
| 10/30/1993 | CA2067538A1 Automatic volume control system |
| 10/26/1993 | US5257313 Surround audio apparatus |
| 10/19/1993 | US5255326 Interactive audio control system |
| 09/30/1993 | DE4307008A1 Acoustic field corrector using cascaded delay circuits - operates by addn. of outputs of cascaded combinations of echo-generating delay stages and coefft. multipliers |
| 09/29/1993 | EP0561881A1 Compensating filters |
| 08/31/1993 | US5241605 Tone control apparatus for front and rear channels |
| 08/31/1993 | US5241604 Sound effect apparatus |
| 08/19/1993 | DE4204207A1 Deriving mono signal from stereo two channel input - placing microphone in suitable pick-up space between spherical loudspeakers |
| 08/04/1993 | EP0553832A1 Sound field controller |
| 07/06/1993 | CA1319891C Electro-acoustical system |
| 06/30/1993 | EP0517848A4 Sound mixing device |
| 06/24/1993 | WO1993012517A1 Acoustic equipment and method of displaying operating thereof |
| 06/24/1993 | DE4302725A1 Balance regulation circuit for multichannel audio amplifier - adjusts ratio between loudspeaker volumes in dependence on relative position of listener to each loudspeaker |
| 06/22/1993 | US5222059 Surround-sound system with motion picture soundtrack timbre correction, surround sound channel timbre correction, defined loudspeaker directionality, and reduced comb-filter effects |
| 06/09/1993 | DE4241130A1 Producing two channel sound field - using successive addition and subtraction of initial front and rear left and right signals to obtain left and right channel signals for headphones |
| 06/02/1993 | EP0544232A2 Sound collecting system and sound reproducing system |
| 05/18/1993 | US5212733 Sound mixing device |
| 05/12/1993 | EP0541030A2 Audio reproducing apparatus |
| 05/11/1993 | US5210796 Stereo/monaural detection apparatus |
| 04/14/1993 | EP0536959A2 Sound editing apparatus |
| 04/06/1993 | US5201005 Sound field compensating apparatus |
| 03/31/1993 | EP0533757A1 Surround processor |
| 03/10/1993 | EP0530711A1 Recording medium playing apparatus and compound AV system including such a playing apparatus |
| 02/24/1993 | EP0528475A1 Method and apparatus for adjusting tone in a sound system |
| 02/23/1993 | US5189703 Timbre correction units for use in sound systems |
| 02/16/1993 | US5187692 Acoustic transfer function simulating method and simulator using the same |
| 02/03/1993 | EP0526136A2 System for calibrating sound field |
| 01/28/1993 | DE4224338A1 Compensating sound signals according to auditorium conditions - varying high frequency range according to results of tests on room before playback |
| 01/19/1993 | US5181249 Three channel audio transmission and/or reproduction systems |
| 01/19/1993 | US5181248 Acoustic signal reproducing apparatus |
| 01/05/1993 | CA1312369C Sound reproducer |
| 12/23/1992 | EP0519055A1 Decoder for variable-number of channel presentation of multidimensional sound fields. |
| 12/16/1992 | EP0517848A1 Sound mixing device |
| 12/15/1992 | US5172415 Surround processor |
| 12/09/1992 | EP0517233A1 Music/voice discriminating apparatus |
| 12/02/1992 | EP0516183A1 Television receiver |
| 12/01/1992 | CA1310919C Surround-sound system |
| 11/17/1992 | US5165099 Balance control circuit |
| 11/03/1992 | US5161197 Acoustic analysis |
| 11/03/1992 | US5161196 Apparatus and method for reducing motion sickness |
| 10/28/1992 | CN1065768A Portable numerical controlled sound adjusting table |
| 10/20/1992 | CA1309031C Stereo enhancement and directivity servo |
| 10/06/1992 | US5153362 Electronic musical instrument having pan control function |
| 09/30/1992 | EP0505949A1 Acoustic transfer function simulating method and simulator using the same |
| 09/10/1992 | DE4106844A1 Car radio system allowing fader control of four loudspeakers - has four-resistor bridge connecting loudspeakers to receiver via capacitors, with centre tap connected to negative terminal of front and positive terminal of rear loudspeakers |
| 09/08/1992 | US5146507 Audio reproduction characteristics control device |
| 08/27/1992 | DE4204289A1 Digital processing system to improve sound reproduction - provides delay of signals to compensate for reflection effects with signal coefficients set by computer |
| 08/26/1992 | EP0499729A1 Sound imaging apparatus for a video game system |
| 08/25/1992 | US5142586 Electro-acoustical system |
| 08/06/1992 | DE4202609A1 Controlling reproduction sound level for matching to listening chamber - by regulating loudspeaker signal according to difference between generated and detected auditorium test signal |
| 07/23/1992 | WO1992012608A1 Decoder for variable-number of channel presentation of multidimensional sound fields |
| 07/23/1992 | DE4142472A1 Audio signal balance compensating circuit for stereo transmission - has generator of two comparison signals under response to two compensating signals |
| 07/14/1992 | US5130816 Method and apparatus for recording and reproducing information including plural channel audio signals |
| 06/25/1992 | WO1992010876A1 Compensating filters |
| 06/23/1992 | CA1304005C Stereo expansion circuit selection switch |
| 06/09/1992 | US5121433 Apparatus and method for controlling the magnitude spectrum of acoustically combined signals |
| 06/02/1992 | CA1302522C Level determining circuit generating output signal at first or second terminal according to level of input signal |
| 06/02/1992 | CA1302298C Center mode control circuit for sound system |
| 05/27/1992 | EP0487484A1 Improvement to the controls of vehicle audio/video apparatuses |
| 05/27/1992 | EP0487181A2 Sound field compensating apparatus |
| 05/26/1992 | CA1301660C Three-dimensional auditory display apparatus and method utilizing enhanced bionic emulation of human binaural sound localization |
| 05/13/1992 | EP0485222A2 Stereo monaural detection apparatus with differential and add components detection |
| 05/05/1992 | US5111508 Audio system for vehicular application |
| 04/28/1992 | US5109415 Audio signal processing system performing balance control in both amplitude and phase of audio signal |
| 04/22/1992 | EP0481821A2 Method and apparatus for determining phase correlation of a stereophonic signal |
| 04/14/1992 | US5105462 Sound imaging method and apparatus |
| 04/14/1992 | US5105412 Recording medium playing apparatus for correcting audio signals using an appropriate sound field |
| 04/08/1992 | EP0479456A2 Automatically configured audio system |
| 03/12/1992 | DE4125893A1 Audio reproduction system for motor vehicle - has multiple loudspeakersoperated to compensate for insufficiencies of acoustics insidevehicle |
| 03/12/1992 | DE4027338A1 Automatic balance control for stereo system - has sensors to determine position of person and adjusts loudspeaker levels accordingly |