FIELD: audio data processing.
SUBSTANCE: technical result is achieved due to the fact that gain curves of the MDCT area for frames of MDCT coefficients are created based on the response values determined from the sequence of LPC polynomials, and the creation of gain curves in the MDCT area comprises mapping LPC polynomials to the corresponding frames of MDCT coefficients; gain curves in the MDCT area are applied to the MDCT coefficient frames to obtain gain-corrected MDCT coefficient frames; and frames of gain-corrected MDCT coefficients are quantized.
EFFECT: increase in the coding accuracy of both general audio signals and speech signals at low data rates.
16 cl, 34 dwg
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