FIELD: physics.
SUBSTANCE: invention relates to means of encoding a multichannel signal. Multichannel signal of current frame is obtained. Initial value of inter-channel time difference (ITD) of current frame is determined. Based on the characteristic information of the multichannel signal, the number of target frames is controlled, the continuous appearance of which is acceptable. At that, the characteristic information contains at least one of the signal/noise ratio of the multichannel signal and the feature of the cross-correlation coefficient peak of the multichannel signal, and the target frame previous frame ITD value is reused as the target frame ITD value. ITD value of the current frame is determined based on the initial value ITD of the current frame and the number of target frames, the continuous appearance of which is acceptable. Multichannel signal is encoded based on the current frame ITD value.
EFFECT: technical result consists in improvement of encoding efficiency of multichannel signal.
18 cl, 8 dwg
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