Patent ID: 6725110
Filing Date: 2004-04-20
Classification: G10L

Abstract:
A digital audio decoder comprising:a plurality of inverse quantization circuits for performing inverse quantization on a plurality of bit stream data, which are supplied thereto in connection with a plurality of channels respectively, thus producing inversely quantized data with respect to a prescribed number of sub-band samples respectively; amplification means for amplifying inversely quantized data of selected sub-band samples, which are respectively output from the plurality of inverse quantization circuits in response to low-frequency components of sound; combining means for combining together the inversely quantized data of the sub-band samples excluding the selected sub-band samples among the plurality of channels and for combining together amplified data corresponding to the selected sub-band samples among the plurality of channels; and a filter bank for synthesizing together combined data of the combining means corresponding to all of the sub-band samples, thus reproducing original digital audio signals.