| 基于谐波结构的钢琴基频估计方法 |
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| 引用本文： | 石立新,张俊星,李敏. 基于谐波结构的钢琴基频估计方法[J]. 电子测试, 2008, 0(5): 35-37,47 |
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| 作者姓名： | 石立新 张俊星 李敏 |
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| 作者单位： | 大连民族学院机电信息工程学院,大连,116600;大连民族学院机电信息工程学院,大连,116600;大连民族学院机电信息工程学院,大连,116600 |
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| 摘 要： | 精确估计钢琴声音的基频,可以帮助调音师进行调律.由于钢琴声音的谐波结构存在基频丢失、谐波丢失以及不谐和性等特殊性,常用基频估计方法精度低甚至出现严重错误.本文基于谐波频率的不谐和性特征,应用最小二乘法估计声音的基频和不谐和系数.仿真实验表明,该方法切实可行,检测精度显著提高,满足钢琴定音调律的要求.
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| 关 键 词： | 最小二乘法 基频估计 谐波结构 |
Piano fundamental frequency estimation algorithm based on harmonic structure |
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| Shi Lixin,Zhang Junxing,Li Min. Piano fundamental frequency estimation algorithm based on harmonic structure[J]. Electronic Test, 2008, 0(5): 35-37,47 |
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| Authors: | Shi Lixin Zhang Junxing Li Min |
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| Affiliation: | Shi Lixin,Zhang Junxing,Li Min(Dept.of Electromechanical , Information Engineering,Dalian Nationalities University,Dalian 116600,China) |
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| Abstract: | Estimating the piano fundamental frequency accurately is helpful to a tuner for his adjusting melody.Because of fundamental frequency losing,harmonic losing and inharmonicity,general fundamental frequency algorithm is invalid.Based on the inharmonicity of harmonic frequency,this paper proposes to apply the least square method to estimate the fundamental frequency and inharmonicity coefficient.With simulating tests,the method is proved feasible and highly accurate and meets the demands of adjusting melody. |
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| Keywords: | the least square method fundamental frequency estimation harmonic structure |
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