A Digital Watermarking Algorithm Based on DCT-SVD for Audio Copyright Protection
نویسندگان
چکیده
The paper proposes a digital watermarking algorithm for audio copyright protection combined characteristics of singular value decomposition (SVD) and discrete cosine transform (DCT). The audio are split into blocks, and each block are decomposed on discrete cosine transform (DCT), then the DCT coefficients are decomposed on singular value decomposition (SVD) transform and embedded the watermark information into the first element of diagonal matrix. Simulation results show that the peak signal-to-noise ratio (PSNR) has high peak when the embedding strength is 0.1 and 0.2 respectively, and the proposed algorithm has better transparency. At the same time, the algorithm can resist against common audio signal attacks, such as re-sampling, echo, noise and so on.
منابع مشابه
Implementation of DCT DWT SVD based watermarking algorithms for copyright protection
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract In recent year, to protect digital content (text, images, audio, and video) from illegal manipulations that has been developed digital image watermarking techniques. In this paper we proposed two different watermarking schemes based on DCTDWT-SVD. ...
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