第3章 残差域加权ACF基音周期检测算法.pdf

32 1 Vol. 32 No. 1 20113 Mar . 2011 Journal of Military Communications T chnology X ACF 1 1 2 肖　强, 王　亚, 陈　亮 ( 1. 4 , 210007; 2. ) : ( A CF) , A CF , ; , ( CA MDF) , CAM DF A CF ; , , : ; ; ; : T N9 12. 3 : A : CN32-1289( 2011) 0 1-0033-04 Weighted ACF Pit ch Det ection Algorithm Based on Linear Predict ion Residual 1 1 2 X I A O Qiang , WA N G Ya , CH E N L iang ( 1. Postgraduat T am 4 ICE, PLA UST , Nanjing 2 10007, China ; 2. , ) D partm nt of El ctronic Informat ion Engin ring ICE PLA UST Abstract: A modifi d v rsion of th ACF pitch d t ction algorithm is propos d in this pap r. , . Firstly lin ar pr dictiv coding analysis is p rform d on th clipp d sp ch signal Th n th s g- m nt d sp ch is filt r d by th inv rs filt r to g t th lin ar pr diction rror , th ACF and CAMDF valu of th rr or signal ar calculat d. Finally, as th CAMDF has similar charact ris- tics w ith th ACF, th ACF is w ight d by th r ciprocal of th CAMDF. Simulation r sults show that th pr opos d algor ithm l ads to high r accuracy of th stimat d pitch than traditional ACF m thod. : ; ; ; Key words pit