AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING SAMPLING RATE DEPENDENT TIME-WARP CONTOUR ENCODING Russian patent published in 2016 - IPC G10L19/02 G10L19/22 

FIELD: sound.

SUBSTANCE: invention relates to encoding and decoding an audio signal. Audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation comprising a sampling frequency information, an encoded time warp information and an encoded spectrum representation comprises a time warp calculator and a warp decoder. Time warp calculator is configured to adapt a mapping rule for mapping codewords of the encoded time warp information onto decoded time warp values describing the decoded time warp information in dependence on the sampling frequency information. Warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded spectrum representation and in dependence on the decoded time warp information.

EFFECT: technical result is to increase the coding efficiency.

17 cl, 35 dwg