有限長の信号列に対する零位相フィルタとその応用について

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概要

• 論文の詳細を見る

• In this paper, I describe the filter that has a zero phase characteristic and propose one of the design methods. The zero phase filter is a filter that the frequency characteristic becomes real function and the phase characteristic is zero degree in all frequency bands. It is possible to think the zero phase filter theoretically, but the realization is impossible by only a kind of filter. In this research, I propose two kinds of filters. Those filters are a forward filter and a backward filter. When this two kinds of filters are combined, each phase characteristic is offsetted and become a zero phase filter. Also, I apply the zero phase filter to spectral envelope estimation. This is the method that makes the logarithmic amplitude spectrum smooth that is obtained from Fast Fourier Transformation (FFT).

• 明治大学の論文

著者

• 鎌田 弘之

  School of Science and Technology, Meiji University

• 鎌田 弘之

  School Of Engineering Meiji University

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• 有限長の信号列に対する零位相フィルタとその応用について

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