Audio watermarking using wavelets

Copyright right protection of digital multimedia has been receiving considerable attention in the last decade. Many effective watermarking algorithms have been proposed and implemented for digital images and digital video, however, few algorithms have been proposed for audio watermarking. This is due to the fact that the human audio system (HAS) is far more complex and sensitive than the human visual system (HVS). In this paper, we describe an imperceptible and robust audio watermarking algorithm based on the discrete wavelet transform (DWT). Performance of the algorithm has been evaluated extensively, and simulation results demonstrate the imperceptibility (inaudibility) and robustness of the proposed algorithm.

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