Patent ID: 6438525
Filing Date: 2002-08-20
Classification: G10L,H04B,H04N

Abstract:
A scalable audio coding apparatus for coding audio signals to have layered bitrate data of a predetermined number, comprising:a quantizing portion for signal-processing input audio signals and directly quantizing the same for each coding band; and a bit packing portion for generating bitstreams by coding side information corresponding to a base layer and sliced digits of the quantized data, and coding side information corresponding to the next layer of the base layer and uncoded sliced digits of the quantized data, to perform coding on all layers, wherein the bit packing portion performs the coding by representing the quantized data by binary data having bits of a predetermined number to slice the same into units of bits, and coding the bit-sliced data from the most significant bit sequence to the least significant bit sequence, by a predetermined coding method.