FIELD: data processing.
SUBSTANCE: invention relates to audio signal processing. Technical result is achieved by calculating an incomplete downmix signal from two channels, by summing two channels so that a predetermined ratio of energies or a ratio of amplitudes between two channels of the multichannel signal and the channel of incomplete downmix is satisfied, when said two channels coincide in phase and so that energy losses or amplitude losses are generated in the signal of incomplete downmix relative to said at least two channels, when said at least two channels do not coincide in phase, computation of the complementary signal from the multichannel signal, wherein the complement signal is different from the incomplete downmix signal, and summing an incomplete downmix signal and a complement signal to obtain a downmix signal of the multi-channel signal.
EFFECT: technical result consists in minimization of typical suppression of signal and instabilities observed in traditional step-down mixing.
19 cl, 24 dwg
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Year |
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Number |
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