Audio digital quantification watermark algorithm based on m-sequence modulation
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A novel audio digital quantification watermark algorithm based on msequence modulation first converted the binary watermarking image into a onedimension sequence, and the sequence was then modulated with msequence, the audio signal was finally divided into segments and DFT was performed. The modulated watermark was embedded into the amplitude of the coefficient of the transform domain in the quantification process. The watermark can be extracted without the original audio signal. Experimental results demonstrate the algorithm is robust and imperceptible.