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Improved Method of Speech Pitch Detection Based on ACF and AMDF

LI Zhijun,YIN Xia(Information Engineering College,Yangzhou University,Yangzhou Jiangsu 225009,China)  
The Auto Correlation Function(ACF) and the Average Magnitude Difference Function(AMDF) are two commonly used method of pitch detection.They have independent and similar statistical characteristics.Based on the discussion of traditional pitch detection algorithm,a comprehensive application with ACF and AMDF is given.The method is simple and practicable.It′s better than traditional time-domain pitch detection algorithm.Simulation results show that the algorithm has strong antinoise ability.
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