| MIDI文件主旋律音轨的抽取 |
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| 引用本文： | 黄志刚,周昌乐,蒋旻隽.MIDI文件主旋律音轨的抽取[J].厦门大学学报(自然科学版),2010,49(1). |
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| 作者姓名： | 黄志刚 周昌乐 蒋旻隽 |
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| 作者单位： | 厦门大学信息科学与技术学院,福建,厦门,361005 |
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| 摘 要： | 在数字音乐的研究应用中,大多数高层语义的音乐特征研究都以MIDI音乐文件库作为素材,其中主旋律音轨作为最重要的音乐信息,而从MIDI文件中获取主旋律信息具有很大的难度和误差.提出一种应用随机森林的方法自动抽取MIDI文件中主旋律所在的音轨.首先根据信息熵理论定义了音轨特征的熵值,并通过实验判断该特征的熵值对区分MIDI主旋律音轨与伴奏音轨是有效的.然后由MIDI文件的音轨信息熵和一些其他重要特征组成特征向量,构建随机森林分类器抽取MIDI文件主旋律所在的音轨.由实验可知,该模型有较高的准确率,对提取MIDI文件主旋律音轨有效.
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| 关 键 词： | 主旋律 音轨熵 |
Melodic Track Extraction for MIDI |
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| HUANG Zhi-gang,ZHOU Chang-le,JIANG Min-juan.Melodic Track Extraction for MIDI[J].Journal of Xiamen University(Natural Science),2010,49(1). |
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| Authors: | HUANG Zhi-gang ZHOU Chang-le JIANG Min-juan |
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| Institution: | HUANG Zhi-gang,ZHOU Chang-le,JIANG Min-juan (School of Information Science , Technology,Xiamen University,Xiamen 361005,China) |
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| Abstract: | In the digital musical research and applications,MIDI music files are used as materials for most of music high-level semantic features research.And the melody is the most important information.However,it is great difficulty to get melodic track information. This paper represented a method to extract melodic track from midi-tracks files based on random forests classifier.First,the information entropy of midi-track was defined based on information entropy theory.By test experiment,it was proved its validity t... |
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| Keywords: | MIDI MIDI melody track entropy |
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