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多重分形维数在语音分割和语音识别中的应用
Application of Multifractal Dimension in Speech Segmentation and Recognition
【摘要】 语音气流中具有混沌特征,而分形可以定量地分析混沌现象,故分形可作为分析语音信号的数学工具.由于传统的Hausdorff-Besicovitch 维数没有考虑关于集合中点的分布信息,本文引入多重分形维数来克服上述缺点.实验表明,多重分形维数语音分割方法明显好于单一Hausdorff-Besicovitch 分形维数的语音分割方法
【Abstract】 There are chaotic characters in speech air flow. And fractal can be used to quantify the chaotic phenomenon. So we can use fractal as a mathematical vehicle to analyze speech signals. The traditional Hausdorff Besicovitch dimension does not consider the information about the distribution of the points in the set. Here we introduced multifractal dimension to overcome the drawback. The experiment result shows better segmentation is achieved by multifractal dimension than only by single Hausdorff Besicovitch fractal dimension.
【关键词】 分形;
多重分形;
语音分割;
语音识别;
【Key words】 fractal; multifractal; speech segmentation; speech recognition;
【Key words】 fractal; multifractal; speech segmentation; speech recognition;
【基金】 国家自然科学基金
- 【文献出处】 上海交通大学学报 ,JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY , 编辑部邮箱 ,1999年11期
- 【分类号】TN912.3
- 【被引频次】9
- 【下载频次】193