计算机工程与应用2012，Vol.48Issue(32)：107-112,6.DOI:10.3778/j.issn.1002-8331.1206-0118
基于音频波形极值的基音检测方法
Pitch detection method based on waveform extremum
摘要
Abstract
A short time pitch detection algorithm based on waveform extremum is proposed. Speech extremum is extracted after denoised and voiced / unvoiced detected, then the waveform extremum is modified. Magnitude difference is calculated, and pitch is detected by a certain pitch criterion. The algorithm, with high accuracy, does not need divided window processing, and main calculation is waveform extremum processing and has a smaller amount of calculation than common AMDF. Experimental results show that this method can get accurate pitch and is suitable for real-time processing.关键词
波形修正算法(WEM)/基音周期(PITCH)/平均幅度差函数(AMDF)/变长平均幅度差函数(LV-AMDF)/循环平均幅度差函数(CAMDF)Key words
Waveform Extremum Method (WEM)/ pitch period/ Average Magnitude Difference Function (AMDF)/ Length Variable-Average Magnitude Difference Function(LV-AMDF)/ Circular Average Magnitude Difference Function(CAMDF)分类
信息技术与安全科学引用本文复制引用
石锐,叶亮亮,何庆华..基于音频波形极值的基音检测方法[J].计算机工程与应用,2012,48(32):107-112,6.基金项目
重庆市科技攻关计划项目(No.CSTC2009AC5023). （No.CSTC2009AC5023）
