摘要
本文提出了一种基于离散小波变换的同步数字音频盲水印算法。嵌入的水印为视觉上可辨的二值图像。算法中引入了嵌入同步信号的思想,利用同步信号定位水印的嵌入位置。为了提高信号的鲁棒性,把同步信号与水印隐藏在DWT域的低频系数中。同时,检测水印时不需要原始音频。仿真实验表明,所提出的方法具有较强的鲁棒性和不可感知性,并能有效抵御各种常见攻击。
An algorithm of blind synchronous digital audio watermarking based on Discrete Wavelet Transform （DWT） is proposed. The watermark embedded in this algorithm is e significant binary. The idea of embedding synchronic signal which used the synchronic signal to search the watermark location was introduced. In order to enhance robustness, synchronic signal end watermark were embedded in the lowest frequency of DWT. Detection of the watermarking can be conducted without original audio frequency. Simulation results show that the algorithm has good imperceptibility and robustness, end can against common signal processing manipulations.
出处
《电子质量》
2007年第6期11-13,共3页
Electronics Quality
关键词
数字音频水印
离散小波变换
同步信号
盲水印
Digital audio watermarking
Discrete wavelet transform （DWT）
Synchronic signal
Dlind watermarking
