FIELD: physics, acoustics.
SUBSTANCE: invention refers to multichannel audio signal processing, specifically to multichannel audio signal restoration using primary channel and parametrical supplementary information. Multichannel synthesiser contains postprocessor for postprocess characterisation of restoration or values derived from restoration parameter for current time line of input signal so that postprocessed parameter of restoration or postprocessed value differs from relative quantised and inversely quantised parameter by that value is postprocessed parameter of restoration or derives value are not limited by quantisation step length. Multichannel restoration unit (12) applies postprocessed parameter of restoration to restore multichannel output signal. Technical result consists that by postprocessing of restoration parameters with reference to multichannel coding/decoding enables low data transfer rate, on the one hand, and high quality, on the other hand, as far as strong changes in restored multichannel output signal is lowered owing to great quantisation step length for restoration parameter, being preferable due to required data transfer rate.
EFFECT: improved quality of signal transmission.
25 cl, 16 dwg
