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

fYear

1997

fDate

19-22, Oct 1997

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ASPAA.1997.625587

Filename

625587