FIELD: encoding.
SUBSTANCE: invention relates to methods and devices for distributing the bit budget between sub-frames in a CELP codec. In the method, the corresponding bit budgets are distributed for the first parts of the main CELP module, and the bit budget, remaining after the distribution of the mentioned corresponding bit budgets for the first parts of the main CELP module, is distributed for the second part of the main CELP module. The stage of the bit budget distribution of the second part of the main CELP module contains a stage, in which the bit budget of the second part of the main CELP module is distributed between sub-frames of a frame. For at least one of sub-frames of the frame, a part of the bit budget of the second part of the main CELP module is distributed, which is larger than the individual parts of the bit budget of the second part of the main CELP module distributed for other sub-frames of the frame.
EFFECT: increased efficiency of distributing the bit budget when encoding the bit stream of an audio signal.
82 cl, 3 dwg, 6 tbl
