Research on Audio Watermarking Algorithm Based on EMD
TANG Xin1, MA Zhao-feng1,2, NIU Xin-xin1, YANG Yi-xian1
1. Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. Beijing National Security Science and Technology Co.Ltd, Beijing 100876, China
An audio watermarking algorithm based on EMD(Empirical Mode Decomposition) was proposed.Residual signal components decomposed from EMD were selected to embed watermark by the proposed algorithm and the watermarked components are proved to be still residual signal components,which provides the theoretical basis for the watermark embedding and extraction.The optimal audio watermark embedding strength in EMD was solved by particle swarm optimization algorithm.The robustness and imperceptibility of watermarking can be satisfied according to this embedding strength.The simulation results show that using the optimal embedding strength to embed watermark can guarantee the imperceptibility and robustness of the watermark in most attack conditions.
唐鑫, 马兆丰, 钮心忻, 杨义先. 基于EMD的音频水印算法研究[J]. 电子学报, 2015, 43(7): 1457-1464.
TANG Xin, MA Zhao-feng, NIU Xin-xin, YANG Yi-xian. Research on Audio Watermarking Algorithm Based on EMD. Chinese Journal of Electronics, 2015, 43(7): 1457-1464.
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2015, Vol. 43 
