Watermarking influence on the stationarity of audio signals

Author

Larbi, S. ; Jaidane, M.

Author_Institution

Lab des Systemes de Commun., Ecole Nationale d´´Ingenieurs de Tunis, Tunisia

Volume

6

fYear

2003

fDate

6-10 April 2003

Abstract

The paper presents an analysis of the perceptual impact of watermarking on the stationarity of audio signals. Indeed, the embedded watermark is piecewise stationary, so it modifies the stationarity of the original audio signal. This study is based on stationarity indices, which represent a measure of the variations in the spectral characteristics of signals, using time frequency representations. Simulation results with two kinds of signals, test signals and audio signals (speech and music) are presented. Comparison stationarity indices between watermarked and original audio signals show a significant stationarity enhancement of the watermarked signal, especially for transient attacks.

Keywords

audio signal processing; hearing; spectral analysis; speech processing; time-frequency analysis; watermarking; audio signal stationarity; audio signals; music; perceptual impact; spectral characteristics; speech; time frequency representations; watermarking; Echo cancellers; Filters; Masking threshold; Multiple signal classification; Random sequences; Signal analysis; Speech; Testing; Time frequency analysis; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1201718

Filename

1201718