结合DCTM与HMM的音乐分类方法

被引:4
作者
徐桂彬
邓伟
机构
[1] 苏州大学计算机科学与技术学院
关键词
音乐分类; 相关主题模型; 动态相关主题模型; 变分卡尔曼滤波; 隐马尔克夫模型;
D O I
10.16208/j.issn1000-7024.2012.11.021
中图分类号
TN912.3 [语音信号处理];
学科分类号
0711 ;
摘要
改进相关主题模型(correlated topic model,CTM)使其具有动态性,提出了动态相关主题模型(dynamic correla-ted topic model,DCTM),使用变分卡尔曼滤波推断模型的隐含主题参数。将DCTM作为降维模型与隐马尔克夫模型(hidden Markov model,HMM)相结合对音乐分类。这一方法将音乐片段分割为等长的小片段,将小片段的声学特征向量通过相似性比较转化为单词序列,通过DCTM将单词序列转换为主题向量。将主题向量输入HMM得出分类结果。由于DCTM的动态建模,更好地提取对分类有用的信息,因此增强了方法的分类能力。实验验证了方法的有效性。
引用
收藏
页码:4245 / 4249+4332 +4332
页数:6
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