An efficient and simple Audio Watermarking using DCT-SVD

Digital Audio Watermarking involves the concealment of data within a discrete audio file. Intellectual property protection is the main driving force behind research in this area. So, an efficient yet simple audio watermarking algorithm in the frequency domain by embedding a visual watermark in the audio signal is proposed. Discrete Cosine Transform (DCT) along with Singular Value Decomposition (SVD) is used to embed the watermark image into the audio signal. Similarly, Discrete Wavelet Transform (DWT) and SVD is used as another technique. The performance of the two techniques is evaluated based on PSNR, MOS criteria and Pearson Correlation Coefficient (PCC). Experimental results show that the DCT-SVD method has good imperceptibility and is robust against different kinds of attacks such as noise adding, re-sampling, cropping.

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