Title :
Noiseless coding of quantized spectral components in MPEG-2 Advanced Audio Coding
Author :
Quackenbush, S.R. ; Johnston, J.D.
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
Abstract :
Advanced Audio Coding (AAC), part of ISO/MPEG-2, issued as an international standard in April, 1997. It supports single or multiple channel audio programs and delivers excellent audio quality at or below 64 kbps/channel by exploiting the compression capabilities of a high-resolution filterbank, backward-adaptive prediction, joint channel coding, nonlinear quantizers and noiseless (Huffman) coding. This paper describes the flexible Huffman coding algorithm used in AAC and discusses the compression provided by this component of the standard
Keywords :
Huffman codes; audio coding; band-pass filters; channel coding; code standards; quantisation (signal); signal resolution; spectral analysis; telecommunication standards; 64 kbit/s; Huffman coding algorithm; ISO/MPEG-2; MPEG-2 Advanced Audio Coding; audio quality; backward-adaptive prediction; compression; high-resolution filterbank; international standard; joint channel coding; multiple channel audio programs; noiseless coding; nonlinear quantizers; quantized spectral components; single channel audio programs; Acoustic noise; Audio coding; Decoding; Filter bank; Frequency; Noise shaping; Quantization; Sampling methods; Signal resolution; Transform coding;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1997. 1997 IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3908-8
DOI :
10.1109/ASPAA.1997.625587
