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Symmetry 2018, 10(7), 284; https://doi.org/10.3390/sym10070284

Adaptive and Blind Audio Watermarking Algorithm Based on Chaotic Encryption in Hybrid Domain

1,2,* and 1
1
College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
2
College of Zijin, Nanjing University of Science and Technology, Nanjing 210046, China
*
Author to whom correspondence should be addressed.
Received: 27 June 2018 / Revised: 12 July 2018 / Accepted: 13 July 2018 / Published: 14 July 2018
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Abstract

An adaptive and blind audio watermarking algorithm is proposed based on chaotic encryption in discrete cosine transform (DCT) and discrete wavelet transform (DWT) hybrid domain. Since human ears are not sensitive to small changes in the high-frequency components of the audio media, the encrypted watermark can be embedded into the audio signal according to the special embedding rules. The embedding depth of each audio segment is controlled by the overall average amplitude to effectively improve the robustness and imperceptibility. The watermark is encrypted by a chaotic sequence to improve the security of watermark, so only users who hold the correct key can accurately extract the watermark without the original audio signal. Experimental results show that the proposed algorithm has larger capacity, higher imperceptibility, better security, and stronger robustness when combating against signal-processing attacks than the involved audio watermarking algorithms in recent years. View Full-Text
Keywords: audio digital watermarking; chaotic encryption; adaptive embedding depth; blind extraction audio digital watermarking; chaotic encryption; adaptive embedding depth; blind extraction
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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. (CC BY 4.0).
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Wu, Q.; Wu, M. Adaptive and Blind Audio Watermarking Algorithm Based on Chaotic Encryption in Hybrid Domain. Symmetry 2018, 10, 284.

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