| Patents for H04S 1 - Two-channel systems (4,182) |
|---|
| 05/14/1998 | WO1998020706A1 Method and device for projecting sound sources onto loudspeakers |
| 05/14/1998 | DE19646055A1 Verfahren und Vorrichtung zur Abbildung von Schallquellen auf Lautsprecher Method and apparatus for mapping the sound sources onto loudspeakers |
| 05/14/1998 | CA2271659A1 Stereo sound expander |
| 05/13/1998 | CN1038380C Control circuit for a spatial stereo expander |
| 05/12/1998 | US5751817 Simplified analog virtual externalization for stereophonic audio |
| 05/12/1998 | US5751815 Apparatus for audio signal stereophonic adjustment |
| 05/05/1998 | US5748745 Analog vector processor and method for producing a binaural signal |
| 04/28/1998 | US5745584 Sound bubble structures for sound reproducing arrays |
| 04/28/1998 | CA2100342C Am-fm combined stereo receiver |
| 04/21/1998 | US5742687 Signal processing circuit including a signal combining circuit stereophonic audio reproduction system including the signal processing circuit and an audio-visual reproduction system including the stereophonic audio reproduction system |
| 04/15/1998 | EP0836365A2 System for processing audio surround signal |
| 04/15/1998 | EP0478615B2 Polyphonic coding |
| 04/15/1998 | CN1179074A Apparatus for reproducing multi channel voice using two speaker and its method |
| 04/14/1998 | US5740253 Sterophonic sound field expansion device |
| 04/07/1998 | US5736943 Method for determining the type of coding to be selected for coding at least two signals |
| 04/02/1998 | DE19641582A1 Reproducing single or multiple sounds or sound-sequences as start- or presence- or alarm- or pause- or end-codes in cinema, theatre, or at a concert etc |
| 04/01/1998 | EP0833302A2 Sound field reproducing device |
| 03/26/1998 | WO1998012896A1 Transaural stereo device |
| 03/18/1998 | EP0787416B1 Process for measuring the fidelity of stereophonic audio signals and process for recognising stereophonic audio signals coded together |
| 03/18/1998 | EP0465662B1 Apparatus for reproducing acoustic signals |
| 03/11/1998 | EP0828405A2 System for processing audio surround signal |
| 03/10/1998 | US5727067 Sound field control device |
| 03/10/1998 | US5727066 Sound Reproduction systems |
| 03/04/1998 | EP0827361A2 Three-dimensional sound processing system |
| 03/03/1998 | US5724429 System and method for enhancing the spatial effect of sound produced by a sound system |
| 03/03/1998 | US5723804 Electric monophonic/stereophonic stringed resonator instrument |
| 03/03/1998 | CA2122371C Moving picture coding apparatus |
| 02/19/1998 | WO1998007299A1 Recording and play-back two-channel system for providing a holophonic reproduction of sounds |
| 02/19/1998 | WO1998007234A1 Apparatus and methods for the harmonic enhancement of electronic audio signals |
| 02/19/1998 | CA2262736A1 Apparatus and methods for the harmonic enhancement of electronic audio signals |
| 02/17/1998 | US5719944 System and method for creating a doppler effect |
| 02/11/1998 | EP0823189A2 Stereo enhancement system |
| 02/11/1998 | CN1173268A Stereo enhancement system |
| 02/10/1998 | US5717767 Angle detection apparatus and audio reproduction apparatus using it |
| 02/10/1998 | US5717766 Stereophonic sound reproduction apparatus using a plurality of loudspeakers in each channel |
| 02/10/1998 | US5717763 Vocal mix circuit |
| 02/10/1998 | US5717670 Information compacting method and apparatus, compacted information expanding method and apparatus, compacted information recording/transmitting apparatus, compacted information receiving apparatus and recording medium |
| 02/10/1998 | US5717534 Digital sound reproducing and editing device with variable-speed continuous sound reproduction |
| 02/03/1998 | US5715317 Apparatus for controlling localization of a sound image |
| 01/28/1998 | EP0821544A2 Device for sliding switching of a demodulator from stereophonic to monaural and vice versa |
| 01/22/1998 | WO1998003037A1 Coding and decoding of audio signals by using intensity stereo and prediction processes |
| 01/22/1998 | WO1998003036A1 Process for coding and decoding stereophonic spectral values |
| 01/22/1998 | WO1998002978A1 Acoustic heterodyne device and method |
| 01/20/1998 | US5710818 Apparatus for expanding and controlling sound fields |
| 01/15/1998 | DE19628292A1 Verfahren zum Codieren und Decodieren von Stereoaudiospektralwerten A method of encoding and decoding stereo audio spectral values |
| 01/07/1998 | CN1169559A Sound generation device synchronous with picture display |
| 12/30/1997 | US5703999 Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels |
| 12/30/1997 | US5703956 External memory control circuit for sound field processing digital signal processor |
| 12/30/1997 | US5703953 Monaural signal judgement circuit |
| 12/23/1997 | US5701344 Audio processing apparatus |
| 12/18/1997 | WO1997048252A1 Method and apparatus for localization of an acoustic source |
| 12/17/1997 | EP0813351A2 Sound generator synchronized with image display |
| 12/11/1997 | DE19628293C1 Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion Encoding and decoding of audio signals by using intensity stereo prediction and |
| 12/09/1997 | US5696834 Stereo system and stereo method for electronic acoustical system |
| 12/09/1997 | US5696831 Audio reproducing apparatus corresponding to picture |
| 11/25/1997 | US5692050 Method and apparatus for spatially enhancing stereo and monophonic signals |
| 11/19/1997 | EP0808075A2 Audio reproduction systems |
| 11/18/1997 | US5689570 Sound reproducing array processor system |
| 11/12/1997 | EP0806092A1 A directional acoustic signal processor and method therefor |
| 11/11/1997 | US5687239 Audio reproduction apparatus |
| 11/06/1997 | DE19618019A1 Transmission parameter adjustment arrangement for acoustic hearing arrangement |
| 11/06/1997 | DE19618017A1 Acoustic hearing arrangement for simulating human hearing defects |
| 11/06/1997 | DE19618016A1 Realistic acoustic hearing arrangement for selection of hearing aid |
| 11/05/1997 | EP0805613A1 Digital system for the equalisation of frequency and time response of audio systems and devices and of listening spaces |
| 11/04/1997 | US5684881 Sound field and sound image control apparatus and method |
| 10/30/1997 | DE19715498A1 Stereo acoustic image enhancement device |
| 10/22/1997 | EP0801855A1 Audio signal identification using digital labelling signals |
| 10/22/1997 | EP0707763A4 Reduction of background noise for speech enhancement |
| 10/21/1997 | US5680464 Sound field controlling device |
| 10/09/1997 | WO1997037514A1 Apparatus for processing stereophonic signals |
| 10/02/1997 | WO1997036458A1 Three-dimensional sound reproduction system |
| 09/23/1997 | US5671286 Strategy for controlling FM stereo separation and frequency response in noisy reception environments |
| 09/17/1997 | CN1035917C Microphone of video camera |
| 09/16/1997 | US5668885 Low frequency audio conversion circuit |
| 09/09/1997 | US5666425 Plural-channel sound processing |
| 08/28/1997 | WO1997031505A1 An analog vector processor and method for producing a binaural signal |
| 08/27/1997 | EP0791279A1 Loudspeaker system with controlled directional sensitivity |
| 08/27/1997 | CN1158047A image/audio reproducing system |
| 08/26/1997 | US5661812 Head mounted surround sound system |
| 08/26/1997 | US5661808 Stereo enhancement system |
| 08/21/1997 | WO1997030566A1 Sound recording and reproduction systems |
| 08/14/1997 | WO1997029615A1 Three-dimensional sound reproduction system |
| 08/13/1997 | EP0788723A1 Method and apparatus for efficient presentation of high-quality three-dimensional audio |
| 08/12/1997 | US5657454 Data processing system |
| 08/12/1997 | US5657391 Sound image enhancement apparatus |
| 08/06/1997 | EP0787416A1 Process for measuring the fidelity of stereophonic audio signals and process for recognising stereophonic audio signals coded together |
| 08/05/1997 | US5655025 Circuit for automatically recognizing and receiving mono and stereo audio signals |
| 07/30/1997 | EP0786921A1 Digital demodulator |
| 07/30/1997 | EP0786920A1 Transmission system of correlated signals |
| 07/30/1997 | CN1155824A Headphone device |
| 07/29/1997 | US5652798 Reverberant characteristic signal generation apparatus |
| 07/24/1997 | WO1997026715A1 Enhanced concert audio process utilizing a synchronized headgear system |
| 07/24/1997 | CA2242397A1 Enhanced concert audio process utilizing a synchronized headgear system |
| 07/16/1997 | EP0783816A1 A camera and accessory |
| 07/16/1997 | EP0783794A1 Amplitude demodulator |
| 07/16/1997 | EP0400106B1 Stereo enhancement and directivity servo |
| 07/02/1997 | EP0782369A2 Method and apparatus for controlling the output level of the loudspeakers in a vehicle |
| 07/02/1997 | CN1153367A Audio system which not only enables application of surround system standard to special playback uses but also easily maintains compatibility with surround system |
| 06/24/1997 | US5642437 Data processing system |
| 06/24/1997 | US5642425 Sound field control device |