基于matlab的基音周期检测，自相关函数法和平均幅度差函数法-Matlab-based pitch detection, auto-correlation function and the average magnitude difference function method

采用自相关函数法和平均幅度差函数法以及改进的平均幅度差函数法求一段音频的基音-Using the correlation function method and average magnitude difference function method and improved average magnitude difference function method for an audio pitch