FIELD: data processing.
SUBSTANCE: invention relates to means of encoding and decoding audio signals. Downmix signal and a residual signal are generated based on a stereo signal. SBR-coded downmix signal and the SBR mono parameters are generated in response to the downmix signal. One or more parametric stereophonic coding parameters are determined. Perceptually coded in a downstream direction relative to the generation of the SBR-coded downmix signal and the residual signal. Coding based on the sum of the SBR-coded downmix signal and the residual signal and based on the difference between the SBR-coded downmix signal and the residual signal is selected depending on frequency or a frequency-independent manner. Said method enables to select between parametric stereophonic coding or left/right coding of a stereophonic signal into a bitstream signal.
EFFECT: technical result consists in improved efficiency of coding.
18 cl, 26 dwg
| Title |
Year |
Author |
Number |
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|
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|
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|
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|
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|
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|
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|
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|
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