数字音频信号的水印嵌入算法

Watermark Embedding Algorithm for Digital Audio Signal

文中主要研究了数字音频信号嵌入数字水印的基本原理。在此基础上应用小波变换实现数字音频信号完全可恢复数字水印算法。这种算法所隐藏的水印具有隐蔽性,基本上觉察不出对原始音频信号的影响。嵌入水印的数字音频信号经过信号处理后,仍能正确地提取数字水印。

In this paper,a new watermarking algorithm based on wavelet transform for digital audio signal is proposed. This watermark scheme uses the user input data to produce a robust watermark in the wavelet domain. The original audio signal can be fully recovery from the watermarked signal by this algorithm. The performance of the proposed watermark algorithm is supported by experimental results. Initial results obtained show that the watermarked signal is indistinguishable from the original signal and the watermark message is successfully extracted even after the watermarked audio signal were attacked.