Open Access

Audio Watermarking Scheme Robust against Desynchronization Based on the Dyadic Wavelet Transform

EURASIP Journal on Advances in Signal Processing20102010:232616

https://doi.org/10.1155/2010/232616

Received: 6 April 2009

Accepted: 12 January 2010

Published: 2 March 2010

Abstract

Digital watermarking is a technique used to embed an extra piece of information into multimedia signals without degrading the signal quality. For robust audio watermarking, geometrical modifications are common operations and present many challenges because they severely alter the tempo or spectral structures of the audio and thus cause watermark desynchronization. However, most of the existing audio watermarking algorithms lack resynchronization ability due to the nongeometrically-invariant nature of the watermarking domain. In this paper, we consider the dyadic wavelet transform (DYWT) for its geometrical invariants which can help resynchronize the watermark. We then design a novel embedding method based on shape modulation which is demonstrated to be robust against many kinds of attack. Based on the knowledge of the insertion, deletion, and substitution (IDS) channel, we carefully design a novel error correction coding (ECC) with the ability of bit-resynchronization to correct the IDS errors in the watermark. Compared with existing algorithms, our algorithm achieves greater robustness to geometrical modifications and other common operations.

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Authors’ Affiliations

(1)
Guangdong Province Key Laboratory of Information Security, School of Information Science and Technology, Sun Yat-Sen University

Copyright

© YongWang et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.