Abstract:

In order to solve the problem of audio digital products ' copyright protection under the network environment,a new algorithm for digital audio watermarking based on the DWT(Discrete Wavelet Transform) is put forward. The algorithm uses the sum Binary value of the neighboring three watermark bit combination to locate the embedding position,and make its value smaller. The watermarking picture being embedded into audio signal also ensures the ability of attack resisting and adaptation, which could be used to protect the copyright of digital audio signals. The merit of the algorithm is that it takes advantage of the speediness and simplicity of the DWT. Arnold transformation guarantees the security of watermark image.The simulation experiment on the MATLAB is carried based on the algorithm and the results demonstrate robustness and imperceptivity of the algorithm.

Key words: discrete wavelet transform(DWT), Arnold, digital , audio , watermarking, relatively smaller value