| 幅值补偿的AMDF基音周期检测算法 |
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| 引用本文： | 康广玉,郭世泽,孙圣和. 幅值补偿的AMDF基音周期检测算法[J]. 计算机工程与应用, 2009, 45(28): 125-127. DOI: 10.3778/j.issn.1002-8331.2009.28.037 |
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| 作者姓名： | 康广玉 郭世泽 孙圣和 |
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| 作者单位： | 哈尔滨工业大学,自动化测试与控制系,哈尔滨,150001;总参54所,北京,100001 |
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| 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。
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| 关 键 词： | 基音检测 平均幅度差函数(AMDF) 变长AMDF 幅值补偿 |
| 收稿时间： | 2008-11-03 |
| 修稿时间： | 2009-1-22 |
Amplitude compensation based AMDF pitch detection algorithm |
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| KANG Guang-yu,GUO Shi-ze,SUN Sheng-he. Amplitude compensation based AMDF pitch detection algorithm[J]. Computer Engineering and Applications, 2009, 45(28): 125-127. DOI: 10.3778/j.issn.1002-8331.2009.28.037 |
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| Authors: | KANG Guang-yu GUO Shi-ze SUN Sheng-he |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | pitch detection algorithm Average Magnitude Difference Function（AMDF） Length-Varied AMDF amplitude compensation |
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