Fast automatic inharmonicity estimation algorithm

被引:15
作者
Rauhala, Jukka [1 ]
Lehtonen, Heidi-Maria [1 ]
Valimaki, Vesa [1 ]
机构
[1] Helsinki Univ Technol, Lab Acoust & Audio Signal Proc, FI-02015 Espoo, Finland
基金
芬兰科学院;
关键词
D O I
10.1121/1.2719043
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
A new algorithm is presented for estimating the inharmonicity coefficient of slightly inharmonic stringed instrument sounds. In the proposed partial frequencies deviation method, the inharmonicity is estimated in an intuitive way by minimizing the deviation of the expected partial frequencies compared to the frequencies of the high amplitude peaks in the spectrum. This is done in an iterative process, where the algorithm converges towards the target estimation value. The algorithm is tested using both synthetic and recorded piano tones. The results show that the new algorithm produces accurate results with a small computation cost compared to other methods. (c) 2007 Acoustical Society of America.
引用
收藏
页码:EL184 / EL189
页数:6
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