FIELD: physics.
SUBSTANCE: invention relates to means for encoding an audio signal. Noise information describing the noise included in the audio signal is obtained. Audio signal is adaptively encoded depending on noise information in such a way that encoding accuracy is higher for portions of audio signal which are less affected by noise included in audio signal than for parts of audio signal which are more affected by noise included in audio signal, wherein frequency components which are less distorted by noise are quantised with less error, while components which probably contain noise errors have lower weight during quantisation.
EFFECT: technical result consists in improvement of intelligibility of the decoded signal when the acoustic input signal is distorted by background noise and other artefacts.
25 cl, 7 dwg
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