FIELD: physics.
SUBSTANCE: invention relates to means for encoding and decoding a multi-channel audio signal. Multi-channel signal is encoded in the linear prediction domain. Encoding of a multichannel signal is performed in the frequency domain. Switching between coding in the linear prediction domain and coding in the frequency domain is carried out. Moreover, coding in the linear prediction domain contains a downmix of a multi-channel signal to obtain a downmix signal, encoding of the downmix signal by the basic encoder of the linear prediction domain, and the first combined multi-channel coding, creating the first multi-channel information from the multi-channel signal. Moreover, coding in the frequency domain contains the second joint multichannel coding, which creates the second multichannel information from the multichannel signal, wherein the second combined multi-channel coding is different from the first multi-channel coding.
EFFECT: technical result is to improve the efficiency of audio signal processing.
21 cl, 7 tbl, 22 dwg
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