Lossless coding of audio signals using cascaded prediction

Author

Schuller, Gerald ; Yu, Bin ; Huang, Dawei

Author_Institution

Bell Labs., Murray Hill, NJ, USA

Volume

5

fYear

2001

fDate

2001

Firstpage

3273

Abstract

A novel predictive lossless coding scheme is proposed. The prediction is based on a new weighted cascaded least mean squared (WCLMS) method. WCLMS is especially designed for music/speech signals. It can be used either in combination with psycho-acoustically pre-filtered signals to obtain perceptually lossless coding, or as a stand-alone lossless coder. Experiments on a database of moderate size and a variety of pre-filtered mono-signals show that the proposed lossless coder (which needs about 2 bit/sample for pre-filtered signals) outperforms competing lossless coders, WaveZip, Shorten, LTAC and LPAC, in terms of compression ratios

Keywords

audio coding; data compression; least mean squares methods; WCLMS method; audio signals; cascaded prediction; music/speech signals; perceptually lossless coding; predictive lossless coding; psycho-acoustically pre-filtered signals; weighted cascaded least mean squared method; Decoding; Delay; Least squares approximation; Multiple signal classification; Psychology; Redundancy; Signal design; Signal processing algorithms; Speech; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.940357

Filename

940357