FIELD: physics.
SUBSTANCE: invention relates to encoding and decoding means. Audiocoding system comprises a linear prediction unit for filtering an input signal based on an adaptive filter; a conversion unit for converting a frame of the filtered input signal to a conversion region; quantisation unit for quantisation of signal in transformation area. In terms of input signal characteristics, quantization unit decides to encode the signal in conversion area with the help of quantizer based on statistical model, or quantizer not based thereon. Preferably, the decision is based on the size of frame used by conversion unit.
EFFECT: technical result consists in improvement of quality of encoded and decoded signals at reduced speed of data transmission.
14 cl, 34 dwg
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