MULTIMODE AUDIO SIGNAL DECODER, MULTIMODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAMS USING LINEAR PREDICTIVE CODING BASED ON NOISE LIMITATION Russian patent published in 2016 - IPC G10L19/02 G10L19/03 G10L19/04 

FIELD: acoustics.

SUBSTANCE: invention relates to means of encoding and decoding audio signal. Audio signal decoder includes spectral processor designed to generate spectrum from set of spectral coefficients, or their preliminary processed versions, depending on set of linear prediction-domain parameters for part of audio encoded in linear prediction mode, and perform procedure of forming spectrum from set of coded spectral coefficients, or their preliminary processed versions, depending on parameters of set of scaling factors for part of audio content encoded in frequency domain.

EFFECT: technical result consists in improvement of efficiency of encoding audio containing speech and non-vocal part, due to increase efficiency of encoding transitions between these parts.

27 cl, 19 dwg