摘要
提出了一种基于分抽样的音频数字水印算法。该方法对音频信号进行分抽样,然后把水印信号嵌入子音频信号的小波变换后的低频系数中。水印提取时不需要原始音频信号。实验结果表明,该算法对一般的信号处理具有一定的鲁棒性。
A subsample- based watermarking scheme has been investigated for digital audio in this study. The audio signal is subsampled and the watermark information is embedded into low frequency coefficients of the sub - audios after DWT. The extracting procedure reverses the embedding operations without the reference of the original audio and provides a better copyright protection scheme. Experimental results show the algorithm is robust to signal processing.
出处
《现代电子技术》
2006年第7期33-34,37,共3页
Modern Electronics Technique
基金
国家自然科学基金(60272026)
