Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (31): 128-129.DOI: 10.3778/j.issn.1002-8331.2009.31.038

• 数据库、信号与信息处理 • Previous Articles     Next Articles

Pitch detection for the noisy speech

YANG Shuai,SONG Gang   

  1. Shandong University,Jinan 250010,China
  • Received:2008-06-18 Revised:2008-10-08 Online:2009-11-01 Published:2009-11-01
  • Contact: YANG Shuai

对含噪语音进行基频检测的方法

杨 帅,宋 刚   

  1. 山东大学,济南 250010
  • 通讯作者: 杨 帅

Abstract: This paper proposes a pitch detection method for the noisy speech.Firstly,the wavelet transform is used to de-noising the noisy speech,then after the pre-processing,the normalized AMDF is adopted to extract the speech’s fundamental frequencies.During the post-treating,the searching method is used to smooth the fundamental frequencies.Experimental results show the new method has better robust than the traditional method,especially in the low snr.

Key words: pitch detection, wavelet-denoising, normalized AMDF

摘要: 提出一种对含噪语音进行基频检测的新方法。先对含噪语音进行小波去噪,然后再经过预处理后,采用归一化的AMDF算法对语音进行基频提取,后期对基频信号采用搜索试探方法进行平滑处理,通过实验表明,该方法比传统方法有更好的鲁棒性,尤其在低信噪比的情况下。

关键词: 基频检测, 小波去噪, 归一化AMDF

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