Authors: Juan Wang Junjie He
Publish Date: 2016/10/10
Volume: 76, Issue: 13, Pages: 14799-14814
Abstract
Some audio watermark schemes robust against desynchronization attacks are based on synchronization code embedded by quantifying signal energy which have some shortcomings Such as 1 they do not verify the authenticity of watermarked signal detected 2 They are vulnerable to substitution attack To address the shortcomings and considering the background a speech content authentication algorithm is proposed in this paper Firstly the original speech signal is framed and each frame is cut into some segments Secondly samples of the segments are scrambled and selfcorrelation of the scrambled signal is calculated Lastly watermark bit generated by frame number is embedded by quantifying the selfcorrelation If watermarked signal is attacked the attacked frames can be detected according to the frame number extracted Theoretical analysis and experiments demonstrate that the scheme is robust against desynchronization attacks improves the security and has a good performance in ability of tampering locationAuthors appreciate the support by the National Natural Science Foundation of China grant No 61272465 61502409 11601465 and Natural Science Foundation of Henan Province 142400410485 152300410233 We also thank the anonymous reviewers for their constructive suggestions
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