AUDIO ENCODING USING DOWNMIXING Russian patent published in 2012 - IPC G10L19/00 

FIELD: information technology.

SUBSTANCE: audio decoder for decoding a multi-object audio signal, having a first-type audio signal and second-type audio signal encoded therein; the multi-object audio signal consists of a downmixing signal and additional information; the additional information includes information on the level of the first-type audio signal and the second-type audio signal in a first predetermined time/frequency resolution, and the residual signal determines the value of the residual level in the second predetermined time/frequency resolution, includes apparatus for calculating prediction coefficients, based on information on level; and apparatus for upmixing the downmixing signal, based on the prediction coefficients and residual signal, to obtain a first upmixing audio signal close to the first-type audio signal and/or upmixing second-type audio signal which is close to the second-type audio signal.

EFFECT: efficient separation of specific objects in a multi-object audio signal.

25 cl, 24 dwg