一种高效的基音估计算法

An effective pitch estimation algorithm

分析已有的一些基音估计算法,对比其优缺点,提出一种可大大提高计算速度的高效基音估计算法。该算法是利用平均幅度差(MAMDF)法提取若干个可能峰值点,再利用计算精度较高的循环平均幅度差(CAMDF)法对这几个点进行验证,选取数值最小的点作为基音周期。由于只对几个点求CAMDF函数,因此运算量大大减小。

This paper analyses and compares some existing pitch detection algorithms,then puts forward an effective pitch detection algorithm which improves calculation speed.This algorithm uses MAMDF method picking up some possible peak values.Then verifies their values with high-precision CAMDF,the point which has the minimum value is the pitch.The computation reduces greatly because only several points＇ CAMDF function are are computed.