H - Electricity – 04 – S
Patent
H - Electricity
04
S
H04S 3/02 (2006.01)
Patent
CA 2330960
More than two surround-sound channels are provided within the format of a digital soundtrack system designed to provide only two surround-sound channels by matrix encoding from three to five additional surround-sound channels into two "discrete" surround-sound channels. The digital audio stream of the digital soundtrack system designed to provide only two surround-sound channels remains unaltered, thus providing compatibility with existing playback equipment. The format of the media carrying the digital soundtracks also is unaltered. The "discreteness" of the digital soundtrack system is not audibly diminished by employing matrix technology to surround-sound channels, particularly if active matrix decoding is employed.
Cette structure d'un système à piste sonore numérique renferme plus de deux canaux à son surround, ce système étant conçu pour ne fournir que deux canaux à son surround par codage matriciel de trois à cinq canaux supplémentaires à son surround en deux canaux "discrets" à son surround. Le courant audio numérique du système à piste sonore numérique conçu pour ne fournir que deux canaux à son surround demeure inchangé, ce qui garantit la compatibilité avec l'équipement de lecture existant. La structure des supports porteurs des pistes sonores numérique demeure également inchangée. Aucune baisse de la qualité audible de ce système à piste sonore numérique discret n'est ressentie lors de l'application d'une technologie matricielle à des canaux à son surround, surtout si l'on procède à un décodage par matrice active.
Allen Ioan R.
Callahan Raymond E. Jr.
Dolby Laboratories Licensing Corporation
Smart & Biggar
LandOfFree
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