FIELD: means for encoding stereophonic sound.
SUBSTANCE: mixing with lower left and right channels of stereophonic audio signal for formation of primary and secondary channels. Primary channel is encoded and secondary channel is coded. Second channel coding comprises a coherency analysis between encoding parameters, calculated during the secondary channel encoding, and the encoding parameters calculated during the primary channel encoding, to decide whether the encoding parameters, calculated during primary channel encoding, sufficiently close to coding parameters calculated during secondary channel coding to be reused during coding of secondary channel.
EFFECT: technical result consists in improved efficiency of coding.
49 cl, 18 dwg
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