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A speech content authentication algorithm based on a novel watermarking method

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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 self-correlation of the scrambled signal is calculated. Lastly, watermark bit generated by frame number is embedded by quantifying the self-correlation. 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 location.

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Acknowledgments

Authors 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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Authors and Affiliations

  1. College of Mathematics and Information Science, Xinyang Normal University, Xinyang, 464000, China

    Juan Wang & Junjie He

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  1. Juan Wang
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  2. Junjie He
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Correspondence to Junjie He.

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Wang, J., He, J. A speech content authentication algorithm based on a novel watermarking method. Multimed Tools Appl 76, 14799–14814 (2017). https://doi.org/10.1007/s11042-016-4027-5

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  • DOI: https://doi.org/10.1007/s11042-016-4027-5

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