Abstract
We propose a novel audio watermarking scheme which can recover the original audio carrier perfectly if the watermarked audio is modified. Besides, we can adjust the maximum tampered rate allowed and the quality of watermarked audio flexibly as required. In the scheme, an efficient generalized integer transform is improved to embed watermark data which are composed of least significant bits(LSBs) of averages in each patch, reference-bits and check-bits. LSBs are needed in the inverse transform. Then, by comparing the extracted check-bits and calculated ones, the modified area can be localized. Finally, reliable reference-bits and samples data help us reconstruct the original audio without errors. The efficiency of the proposed method is theoretically and experimentally verified.
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Foundation item: Supported by the National Natural Science Foundation of China (61272414), the Science and Technology Project of Guangzhou of China (2012J4100108), and the Jinan University’s Scientific Research Creativeness Cultivation Project for Outstanding Undergraduates Recommended for Postgraduate Study
Biography: LUO Xinrong, male, Master candidate, research direction: information hiding.
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Luo, X., Xiang, S. Fragile audio watermarking with perfect restoration capacity based on an adapted integer transform. Wuhan Univ. J. Nat. Sci. 19, 497–504 (2014). https://doi.org/10.1007/s11859-014-1044-y
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DOI: https://doi.org/10.1007/s11859-014-1044-y