A Study of Time-Dependent Fractal Dimensions of Vocal Sounds
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概要
- 論文の詳細を見る
In this paper, we propose a new method to analyze the fractal properties of self-affine time-sequential data by expanding the well-known fractal dimension analysis to characterize the local dynamical fractal properties. Here we investigate the time dependence of the fractal dimensions of a time-sequential data, which we shall term the "Time-Dependent Fractal Dimensions" (TDFDs), and analyze its characteristics. As an example of self-affine time-sequential data, we will utilize vocal sounds. The TDFDs of Japanese vowels as well as Japanese and English words are evaluated by the recently proposed critical exponent method based on the power spectra and by the multifrarctal analysis. As a result, one may observe that the fractal properties of vocal sounds shows a dynamical change with respect to time and it was found out that there is a certain pattern of TDFDs for each data.
- 社団法人日本物理学会の論文
- 1995-09-15
著者
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NAKAGAWA Masahiro
Department of Electrical Engineering, Faculty of Engineering, Nagaoka University of Technology
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Sabanal S
Department Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology
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Sabanal Salvador
Department of Electrical Engineering, Faculty of Engineering, Nagaoka University of Technology
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Sabanal Salvador
Department Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology
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Nakagawa Masahiro
Department Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology
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Nakagawa Masahiro
Deparment Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology
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