一种基于AMDF和ACF的基音周期提取算法研究  

Pitch Period Extraction Algorithm Research Based on AMDF and ACF

作　　者：夏殿松[1] 胡淼[1] 洪夏俊[1] 

机构地区：[1]解放军理工大学通信工程学院研究生1队,江苏南京210007

出　　处：《军事通信技术》2009年第1期27-31,共5页Journal of Military Communications Technology

摘　　要：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。A pitch period extraction algorithm was proposed based on shorttime average magnitude difference function(AMDF) and short-term autocorrelation function(ACF).At first,AMDF values were computed by AMDF algorithm for a frame of speech signal.Then ACF values were computed by ACF algorithm for AMDF values to calculate the pitch period of each frame.Finally,the dynamic smoothness technology was used for calculating the last pitch period of speech signal.This algorithm was simulated in detail,and compared with oth...

关 键 词：短时平均幅度差分函数 短时自相关函数 动态平滑 

分 类 号：TN912.3[电子电信—通信与信息系统]