在现在信息的安全性得到了重视，水印技术在信息隐藏中是一种新的方法。这篇文章能够帮助我们理解水印技术。-now information security has been the focus of attention, watermark technology in the Information Hiding is a new approach. This article can help us to understand watermarking technology.

利用matlab自带的小波函数对音频进行分解然后嵌入经降维之后的图像水印并提取-Matlab comes with wavelet function to decompose the audio and image watermark embedded by the dimensionality reduction and extract

In this paper we propose a watermarking system that uses the biorthogonal discrete wavelet transform, DWT and the message is encoded before embedding. The proposed watermarking method is very simple, implying four steps: turbo coding of