Reversible Watermarking on Stereo Audio Signals by Exploring Inter-Channel Correlation

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Author(s): Yuanxin Wu (CAS Key Laboratory of Electro-Magnetic Space Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, China), Wen Diao (CAS Key Laboratory of Electro-Magnetic Space Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, China), Dongdong Hou (CAS Key Laboratory of Electro-Magnetic Space Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, China)and Weiming Zhang (CAS Key Laboratory of Electro-magnetic Space Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, China)
Copyright: 2019
Volume: 11
Issue: 1
Pages: 17
Source title: International Journal of Digital Crime and Forensics (IJDCF)
Editor(s)-in-Chief: Feng Liu (Chinese Academy of Sciences, China)
DOI: 10.4018/IJDCF.2019010103

Keywords: Digital Crime & Forensics / Information Science Reference / IT Security and Ethics / Security & Forensics

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Abstract

A new reversible watermarking algorithm on stereo audio signals is proposed in this article. By utilizing correlations between two channels of audio signal, the authors segment one channel based on another one according to the smoothness. For each segmented sub-host sequence, they estimate its capacity and the corresponding embedding distortion firstly, and then select the optimal combinations of sub-host sequences for embedding. Experimental results indicate that the proposed algorithm can improve SNR (signal to noise ratio) for various kinds of capacity.

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Reversible Watermarking on Stereo Audio Signals by Exploring Inter-Channel Correlation

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