H - Electricity – 04 – S
Patent
H - Electricity
04
S
H04S 3/00 (2006.01) H04H 5/00 (2006.01)
Patent
CA 2266324
A method and circuit for deriving a set of multichannel audio signals (10) from a conventional monaural or stereo audio signals (1) uses an auxiliary multichannel spectral mapping data steam (90,92). Audio can be played back in stereo and multichannel formats from a conventional stereo signal (40) on compact discs (88), FM radio, or other stereo or monaural delivery systems (5). The invention reduces the data rate needed for the transmission of multichannel digital audio.
L'invention concerne un procédé et un circuit destinés à obtenir un ensemble de signaux (10) audio multicanaux à partir de signaux (1) audio mono ou stéréo classiques, au moyen d'un flux (90, 92) auxiliaire de données de correspondance spectrale multicanaux. Un signal audio peut être reproduit en stéréo et en formats multicanaux à partir d'un signal (40) stéréo classique sur disques (88) compacts, radio FM, ou d'autres systèmes (5) stéréo ou mono. Cette invention réduit le débit de données nécessaire à la transmission de sons audionumériques multicanaux.
Beard Terry D.
Oyen Wiggs Green & Mutala Llp
LandOfFree
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