计算机工程与应用Issue(14)：222-226,246,6.DOI:10.3778/j.issn.1002-8331.1111-0378
结合改进自相关与加权小波分量的基音检测法
Pitch detection method combined improved ACF with weighted wavelet compo-nents
摘要
Abstract
Autocorrelation function method and wavelet transform are the classical pitch detection methods. The shortcomings of these methods are analyzed when they are used alone, on the basis of this, a new method combining improved autocorrelation function with weighted wavelet components is proposed. The improved autocorrelation function is used to compensate for the peaks of the traditional autocorrelation function. The components of multilevel wavelet transform are weighted to emphasize the fundamental frequency information. And then the two methods are combined to emphasize the peak at the position of the true pitch period. Experimental results show that compared with the classical methods, the method can decrease double frequency errors、half frequency errors and pseudo random point errors, the precision of the pitch detection is improved.关键词
基音检测/小波变换/自相关函数Key words
pitch detection/wavelet transform/autocorrelation function分类
信息技术与安全科学引用本文复制引用
焦蓓,曾以成,侯丽霞..结合改进自相关与加权小波分量的基音检测法[J].计算机工程与应用,2013,(14):222-226,246,6.基金项目
湖南省自然科学基金（No.08JJ5031）。 （）
