APPARATUS FOR ENCODING OF THE AUDIO SIGNAL

摘要

An audio signal coding device is provided to perform a coding by adding a time masking effect to a coder using acoustic characteristics. The device includes a filter bank dividing an input digital audio signal into data in a given section of frequency band; an acoustic characteristics analyzing part analyzing acoustic characteristics of the digital audio signal from the filter bank to find an SMRn of a current frame; an SMR delay part delaying the SMRn analyzed by the acoustic characteristics analyzing part; an SMR computing part computing the SMRn delayed by the SMR delay part to produce an SMRq; a bit allocating & quantizing part allocating bits of an audio signal input by the SMRq and performing a quantization; a bit-stream formatting part producing a bit stream with quantized result from the bit allocating & quantizing part.