FIELD: physics; acoustics.
SUBSTANCE: invention relates to processing multichannel audio, and particularly, to multichannel coding and synthesis using paramatetric additional information. At the coder side, a multichannel input signal is analysed to obtain information for controlling smoothing out, which should be used in multichannel synthesis at the decoder side for smoothing out quantum transmitted parametres or values, obtained from transmitted quantum parametres, to provide for improved audio subject quality, in particular, for drifting point sources and rapidly moving point sources, with a tone signal, for example of a fast changing sinusoid.
EFFECT: improvement of audio quality through adaptive smoothing out reconstruction parametres in a multichannel synthesiser with few additional bits.
41 cl, 25 dwg
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