Accurate tempo estimation based on harmonic plus noise decomposition

被引:9
作者
Alonso, Miguel [1 ]
Richard, Gael [1 ]
David, Bertrand [1 ]
机构
[1] Ecole Natl Super Telecommun Bretagne, GET, Telecom Paris, F-75634 Paris 13, France
关键词
BEAT TRACKING; SIGNALS;
D O I
10.1155/2007/82795
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present an innovative tempo estimation system that processes acoustic audio signals and does not use any high-level musical knowledge. Our proposal relies on a harmonic + noise decomposition of the audio signal by means of a subspace analysis method. Then, a technique to measure the degree of musical accentuation as a function of time is developed and separately applied to the harmonic and noise parts of the input signal. This is followed by a periodicity estimation block that calculates the salience of musical accents for a large number of potential periods. Next, a multipath dynamic programming searches among all the potential periodicities for the most consistent prospects through time, and finally the most energetic candidate is selected as tempo. Our proposal is validated using a manually annotated test-base containing 961 music signals from various musical genres. In addition, the performance of the algorithm under different configurations is compared. The robustness of the algorithm when processing signals of degraded quality is also measured.
引用
收藏
页数:14
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