First, the binary watermarking image was converted into a one-dimension sequence, which was then modulated with the m-sequence, before the audio signal was finally divided into segments and DCT was performed.

• 首先将二值水印图像经过降维操作转化为一维序列,再将一维序列与m序列做扩频调制,最后对音频信号进行分段离散余弦变换,把经过调制的水印信号经过量化处理过程嵌入到离散余弦变换后的系数中;