FIELD: speech analysis or synthesis; speech recognition.
SUBSTANCE: invention relates to audio encoding and decoding devices. Encoded audio bitstream (ABS) is produced from an audio signal (AS) comprising consecutive audio frames (AFP, AFR, AFS). Encoded dynamic range control bitstream (DBS) is produced from a dynamic range control sequence (DS) corresponding to the audio signal (AS) and comprising consecutive dynamic range control frames (DFP, DFR, DFS). Each dynamic range control frame (DFP, DFR, DFS) comprises one or more nodes (A0... A5; B0... B2; C0), wherein each node contains gain information for the audio signal and time information indicating which point in time the gain information corresponds to. Encoded dynamic range control bitstream comprises, for each dynamic range control frame, a corresponding part of the bitstream. Shift procedure is performed, wherein one or more nodes from the nodes of one reference dynamic range control frame are selected as shifted nodes.
EFFECT: technical result consists in improved efficiency of coding.
26 cl, 2 tbl, 9 dwg
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