FIELD: audio signal coding means.
SUBSTANCE: plurality of channel downmix signals are determined from the multichannel input ambiophonic signal. Energy multiplexing of a plurality of downmix channel signals is performed to obtain a plurality of compressed channel signals. The audio recovery metadata is determined based on the plurality of compressed channel signals and based on the multi-channel input ambiophonic signal. In this case, the audio restoration metadata enables the recipient device to upmix multiple compressed channel signals into an approximation of a multi-channel input ambiophonic signal. A plurality of compressed channel signals and audio reconstruction metadata are encoded.
EFFECT: increased efficiency of audio coding.
8 cl, 8 dwg
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