FIELD: data processing.
SUBSTANCE: invention relates to audio data processing. Technical result is achieved by decoding an encoded basic channel to obtain a decoded base channel, performing decorrelation filtering of at least part of the decoded base channel to obtain a filling signal, and performing multichannel processing using spectral representation of decoded base channel and spectral representation of filling signal, wherein decorrelation filtering is broadband filtering, and multichannel processing comprises a step of applying narrow-band processing to a spectral representation of the decoded basic channel and spectral representation of the filling signal.
EFFECT: technical result consists in improvement of decoding accuracy of coded multichannel audio signal.
38 cl, 19 dwg
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