得到声音文件的数据和采样率，求自相关序列，基音周期分析函数，求最大值所对应的位置，即基音周期 -Receive voice data of a file and sample rate, and auto-correlation sequence, the function of pitch analysis, a position corresponding to the maximum demand, the pitch

程序主要是求一段音频数据的基音频率 jiyinzhouqi.m --------求基音周期 find_maxn.m --------求自相关函数的最大值 test2.wav --------程序中用到的示例wav数据文件-The program is mainly the fundamental frequency for an audio data Jiyinzhouqi.m- for pitch period Find_maxn.m- the maximum

CZT运算是在z域以任意螺线采样，源码采用512点做CZT运算求出频域最大值-CZT operation is in the Z domain to arbitrary spiral sampling, the source code using 512 points to do CZT operations to calculate the maximum frequency