FIELD: information technology.
SUBSTANCE: invention relates to means of encoding and decoding of sound. Subband power calculation module calculates subband signal power for high-frequency subband among multiple sub-bands, components of input signal. High-frequency subband power calculation module performs weighing of power subband, having high power, as for subband, having plurality of high frequency subband, for calculation of power of high frequency subband for subband. Multiplexing scheme multiplexes encoded data and encoded data of low frequency for output. Encoded data of high frequency is selected based on high-frequency subband power and is obtained by encoding information used for producing high-frequency component of input signal by estimating, and coded data of low frequency is obtained by encoding low frequency components of input signal.
EFFECT: technical result consists in improvement of accuracy of audio signal, obtained as result of decoding.
17 cl, 6 dwg
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