Abstract: A blind audio digital watermarking method based on power comparison is presented.The features of the proposed algorithm are as follows：A right position to insert watermarking is adaptively found based on masking properties of the Human Auditory System（HAS）.Using the energy concentration characteristics of Discrete Cosine Transform（DCT） gets better transparence.It is a blind audio digital watermarking.Experimental results show that the proposed watermarking algorithm is imperceptible and robust against various signal processing.

摘要： 提出了一种关于能量比较的数字音频盲水印方案，该方案具有以下特点：根据人类听觉系统掩蔽特性，通过能量比较自适应地寻找最佳水印嵌入点；利用离散余弦变换（Discrete Cosine Transform，DCT）的能量压缩特性，提高数字水印的隐藏效果；实现音频数字水印的高透明性和高鲁棒性的同时，实现水印的盲检测。实验结果表明，算法不但保持了在各种攻击下较好的或更好的鲁棒性，定性和定量两方面的分析，也都显示了嵌入水印后的音频信号可以更好地保留原音频信号的感知质量。