基于小波域变换的数字音频水印算法，该算法对音频信号实施小波变换，对精细分量的能量进行比较，根据能量比较的结果及水印比特，结合人类听觉系统，采取缩小或不改变精细分量能量的方法，在精细分量中嵌入水印。-Base on DWT of the digital audio watermarking algorithm，the audio signalhas been transformed by DWT, the energy of detail coefficient of the first three sections has been compared. According to energy comparison and watermark bit. Adopting the way of not changing or reducing energy of the detail coefficient, the watermark has been embedded into the detail coefficient.