FIELD: information technology.
SUBSTANCE: invention relates to means for generating an upper band signal. Determine, on the device, the value of the parameter associated with the bandwidth-enhanced audio stream. In response to the parameter having a first value, select filter information associated with the bandwidth-enhanced audio stream. Filter coefficients are determined based on the filter information. Generate, on said device, an excitation signal of the upper band based on the filter information, wherein the excitation signal of the upper band is generated based on applying a filter with said filter coefficients to the first excitation signal of the upper band.
EFFECT: technical result consists in improved efficiency of coding.
30 cl, 27 dwg, 2 tbl
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