Transient modeling by matching pursuits with a wavelet dictionary for parametric audio coding

Author

Vera-Candeas, P. ; Ruiz-Reyes, N. ; Rosa-Zurera, M. ; Martinez-Muñoz, D. ; Lopez-Ferreras, F.

Author_Institution

Electron. Dept., Univ. of Jaen, Spain

Volume

11

Issue

3

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

349

Lastpage

352

Abstract

In this letter, we propose a novel matching pursuit-based method for transient modeling with application to parametric audio coding. The overcomplete dictionary for the matching pursuit is composed of wavelet functions that implement a wavelet-packet filter bank. The proposed transient modeling method is suitable to be integrated into a parametric audio coder based on the three-part model of sines, transients, and noise (STN model). Comparative analysis between wavelet and exponentially damped sinusoidal functions are shown in experimental results. The mean-squared-error performance of the proposed approach is better than that obtained with damped sinusoids.

Keywords

audio coding; channel bank filters; iterative methods; mean square error methods; wavelet transforms; audio coding; exponentially damped sinusoidal function; matching pursuit-based method; mean-squared-error performance; parametric audio coder; sine-transient-noise three-part model; transient modeling method; wavelet dictionary; wavelet function; wavelet-packet filter bank; Audio coding; Dictionaries; Discrete wavelet transforms; Feature extraction; Filter bank; Matching pursuit algorithms; Signal processing; Transform coding; Wavelet analysis; Wavelet packets;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2003.822904

Filename

1268026