FIELD: radio engineering, communication.
SUBSTANCE: invention relates to means of stereo encoding and decoding using complex prediction in the frequency domain. In one of the versions of the invention, a decoding method for obtaining an output stereo signal from an input stereo signal encoded by complex prediction coding and comprising first frequency-domain representations of two input channels comprises upmixing steps of: computing a second frequency-domain representation of a first input channel; and computing an output channel based on the first and second frequency-domain representations of the first input channel, the first frequency-domain representation of the second input channel and a complex prediction coefficient. The method includes performing frequency-domain modifications selectively before or after upmixing.
EFFECT: providing high audio quality while reducing computational costs.
15 cl, 19 dwg
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