文中提出一种基于短时平均幅度差分函数(AMDF)和短时自相关函数(ACF)的基音周期提取算法。首先,将每帧语音信号通过AMDF算法进行计算,然后把得到的AMDF数值再通过ACF算法进行计算,得出每帧信号的基音周期,最后运用动态平滑技术计算出最终语音信号的基音周期。通过仿真实现该算法,并同基于MAMDF和ACF的基音周期提取算法进行比较。 In this paper, we propose a pitch period extraction algorithm based on short-term average amplitude difference function (AMDF) and short-time autocorrelation function (ACF). First of all, each frame of speech signal is calculated by the AMDF algorithm, and then the obtained AMDF value is calculated by the ACF algorithm to obtain the pitch period of each frame signal. Finally, the dynamic pitch technique is used to calculate the pitch period of the final speech signal. The algorithm is implemented through simulation and compared with pitch algorithm based on MAMDF and ACF.