典型的LSB水印嵌入和提取算法，它是一个基本的matlab程序，可以帮助初学者入门 -typical LSB embedding and extraction algorithm, which is a basic Matlab procedures, Portal can help beginners

一个很不错的小波实验指导书,希望对你有帮助-A very good guide book wavelet experiment, and they hope to help you

改变原始wav音频信号的抽样频率，并且显示处理前后声音信号的频谱.有助于帮助大家理解奈圭斯特抽样定理。-Change the original wav audio signal sampling frequency, and shows the spectrum of sound signal before and after treatment. Helps to help you understand the Nyquist sampling theorem.