基于均值量化的音频脆弱水印算法研究

为了达到对音频内容保护的目的，提出一种新颖音频脆弱水印嵌入算法．首先给出了均值量化（mean-quantization）方法嵌入水印比特信息的基本原理，在此基础上提出了数字音频信号的水印嵌入算法．该算法在对数字音频信号作离散余弦变换基础上，充分利用均值量化的优势，将视觉可辨的水印一二值图像嵌入离散余弦变换的交流系数中，实现了脆弱性水印嵌入音频信号中．实验结果表明，提出的音频脆弱水印算法对常见的音频信号处理具有很好的脆弱性．

Digital audio fragile watermarking algorithm based on mean-quantization

A digital audio fragile watermark scheme is proposed for audio data security. The fundamentals of embedding watermark bit data with mean quantization are explained, and the watermarking algorithm is presented for a digital audio signal. The algorithm embeds fragile watermark into audio signals by inserting a binary image into the alternative coefficients of discrete cosine transformation. Experimental results show that the performance of this scheme is good in fragility.