Sesquialtera in the Colombian bambuco: Perception and estimation of beat and meter
Sesquialtera in the Colombian bambuco: Perception and estimation of beat and meter
复制标题
哥伦比亚竹子中的 Sesquialtera：节拍和节拍的感知和估计
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发表时间：
2020
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通讯作者：
Moises Betancur Peláez
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作者：
Estefanía Cano;Fernando Mora Ángel;G. L. Gil;J. R. Zapata;A. Escamilla;J. A. Londoño;Moises Betancur Peláez
班布科舞曲是哥伦比亚的民族节奏之一，其特点是存在倍半音阶或两米节奏元素的叠加。在这项工作中，我们从两个角度分析了竹子中的倍半叶。首先，我们分析了节拍和节拍的感知，要求10个哥伦比亚音乐家在bambucos数据集中进行节拍注释。结果显示注释的多样性很大：在注释中总共发现了五种不同的米或米组合，研究中的每种bambuco都至少有两种不同的米。其次，我们在一个数据集的bambucos两个国家的最先进的算法进行节拍跟踪分析。考虑到分析中使用的算法是为了处理单个节拍的节奏规律性而设计的，因此跟踪性能不是很高（平均F测量值约为42%）也就不足为奇了。然而，用于节拍跟踪的发作检测功能的更深入的分析表明，有足够的信息的信号电平来表征bambucos的双度量行为。考虑到这一点，我们强调的可能性计算分析的节奏在竹子。
The bambuco, one of the national rhythms of Colombia, is characterized by the presence of sesquialteras or the superposition of rhythmic elements from two meters. In this work, we analyze sesquialteras in bambucos from two perspectives. First, we analyze the perception of beat and meter by asking 10 Colombian musicians to perform beat annotations in a dataset of bambucos. Results show great diversity in the annotations: a total of five different meters or meter combinations were found in the annotations, with each bambuco in the study being annotated in at least two different meters. Second, we perform a beat tracking analysis in a dataset of bambucos with two state-of-the-art algorithms. Given that the algorithms used in the analysis were designed to deal with the rhythmic regularity of a single meter, it is not surprising that tracking performance is not very high (~42% mean F-measure). However, a deeper analysis of the onset detection functions used for beat tracking, indicate that there is enough information on the signal level to characterize the bi-metric behavior of bambucos. With this in mind, we highlight possibilities for computational analysis of rhythm in bambucos.