数字水印的嵌入和检测，dct， 作者Mao Li Purpose:an algorithm to achieve the embeding watermarking to a image by dct bloking and hvs,then detect the watermarking by comparability. -digital watermark embedding and detection, Copy, the writer Mao Li Purpose

基音检测： 对给定语料估计其基音周期。 要求用MATLAB或C语言实现有关基音检测算法，并给出检测结果与实验报告 实验语料：MaoYiSheng.raw 发音：“茅以升”；时长0.9s；采样率：8kHz；量化精度为16bits/sample；数据格式 LSB,MSB 分析帧长:20ms(160样点) 总帧数：45-Pitch Detection: For a given corpus to estimate the pitch period. Require MAT