GENERATION OF NOISE IN AUDIO CODECS

摘要

FIELD: acoustics.SUBSTANCE: invention relates to means of generating noise in audio codecs. Audio encoder includes background noise estimation module configured to determine parametric assessment of background noise on the basis of representation in the form of spectral decomposition of input audio signal so that parameter estimate of background noise spectral describes spectral envelope background noise input audio signal. Audio encoder includes an encoder for encoding an input audio signal into a data stream for active phase. Audio encoder has a detector configured to detect input in inactive phase after active phase based on an input signal. Audio encoder can encode the data stream parametric assessment of background noise in the inactive phase.EFFECT: technical result consists in reducing the bit rate and improved quality of the generated noise.18 cl, 13 dwg