Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
Print_ISBN :
0-7803-7663-3
DOI :
10.1109/ICASSP.2003.1201718
