METHODS AND DEVICES FOR SIGNAL CODING AND DECODING Russian patent published in 2017 - IPC G10L19/02 G10L19/02 G10L19/32 

FIELD: physics.

SUBSTANCE: it is determined, in accordance with the number of available bits and the predetermined first saturation threshold i, the number k of subbands to be encoded, where i is a positive number and k is a positive integer. In accordance with the quantized envelopes of all subbands, k subbands from all subbands are selected or k subbands from all subbands are selected in accordance with the psychoacoustic model. The first coding operation is performed on the spectral coefficients of k subbands. In embodiments of the present invention, the number of k subbands to be encoded is determined according to the number of available bits and the predetermined first saturation threshold, and the coding is performed on k subbands that are selected from all subbands and not over the full frequency range.

EFFECT: improving the decoded signal quality.

18 cl, 8 dwg