基于量化的小波域自同步数字音频水印算法

Synchronic Digital Audio Watermarking Algorithm Based on Quantizing Wavelet Domain Parameters

提出了基于离散小波变换的音频水印算法,与以往的音频水印算法相比,对DWT域的低频系数进行量化,具有较强的鲁棒性.算法中引入了同步信号的思想,利用同步信号定位水印的嵌入位置.实验表明,该算法对抗噪声、有损压缩、重采样攻击具有良好的性能.

Audio watermarking algorithm based on discrete wavelet transform （DWT） is proposed in this paper. The algorithm embedded watermarking by quantizing the lowest-frequency coefficients of DWT of the digital audio signals so that it is more robust than the algorithms introduced previously. The idea of embedding synchronic signal which used the synchronic signal to search the watermark location was introduced. The experimental results indicate the algorithm is robust to many operations on digital audio signal, such as Guass-yawp, lossy compression, re-quantization.