计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (28): 125-127.DOI: 10.3778/j.issn.1002-8331.2009.28.037

• 数据库、信号与信息处理 • 上一篇    下一篇

幅值补偿的AMDF基音周期检测算法

康广玉1,郭世泽2,孙圣和1   

  1. 1.哈尔滨工业大学 自动化测试与控制系,哈尔滨 150001
    2.总参54所,北京 100001
  • 收稿日期:2008-11-03 修回日期:2009-01-22 出版日期:2009-10-01 发布日期:2009-10-01
  • 通讯作者: 康广玉

Amplitude compensation based AMDF pitch detection algorithm

KANG Guang-yu1,GUO Shi-ze2,SUN Sheng-he1   

  1. 1.Department of Automatic Test and Control,Harbin Institute of Technology,Harbin 150001,China
    2.No.54 Institute from Headquarters of the General Staff,Beijing 100001,China
  • Received:2008-11-03 Revised:2009-01-22 Online:2009-10-01 Published:2009-10-01
  • Contact: KANG Guang-yu

摘要: 传统的基于AMDF及其改进算法LV-AMDF容易导致检测基音周期时产生加倍、减半等错误。针对该现象,分析了AMDF、LV-AMDF函数的特性及其用于基音检测时存在的不足,提出了幅值补偿AMDF算法来检测基音周期,降低了基音检测中经常出现的半频、倍频错误,提高了检测的精度。实验表明该方法基音检测性能优于AMDF和LV-AMDF的方法。

关键词: 基音检测, 平均幅度差函数(AMDF), 变长AMDF, 幅值补偿

Abstract: Traditional AMDF and its improved algorithm LV-AMDF based pitch detection method easily causes the double or half error.For this problem,this paper analyzes the characters of functions of AMDF and LV-AMDF and their shortages on pitch detection,and then proposes amplitude compensation based AMDF to detect the pitch.This algorithm decreases the occurring of double-frequency and half-frequency errors and increases the detection precision.The experiments show that the proposed algorithm performs better on pitch detection compared with AMDF and LV-AMDF methods.

Key words: pitch detection algorithm, Average Magnitude Difference Function(AMDF), Length-Varied AMDF, amplitude compensation

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