Design of Equiripple Minimum Phase FIR Filters with Ripple Ratio Control (Digital Signal Processing)
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概要
- 論文の詳細を見る
In this paper, we present a numerical method for the equiripple approximation of minimum phase FIR digital filters. Many methods have been proposed for the design of such fiters. Many of them first design a linear phase filter whose length is twice as long, and then factorize the filter to obtain the minimum phase. Although these methods theoretically guarantee its optimality, it is difficult to control the ratio of ripples between different bands. In the conventional lowpass filter design, for example, when different weights are given for its passband and stopband, one needs to iteratively design the filter by trial and error to achieve the ratio of the weights exactly. To address this problem, we modifies wellknown Parks-McClellan algorithm and make it possible to directly control the ripple ratios. The method iteratively solves a set of linear equations with controlling the ratio of ripples. Using this method, the equiripple solutions are obtained quickly.
- 社団法人電子情報通信学会の論文
- 2006-03-01
著者
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Takahashi S
The Faculty Of Electronics And Electrical Engineering Keio University
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Okuda Masahiro
Department Of Physics And Electronics College Of Osaka Prefecture University
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Okuda Masahiro
Department Of Physics And Electronics College Of Engineering Osaka Prefecture University
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Okuda Masahiro
京都大学医学部附属病院 薬剤部
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Ohmukai M
Department Of Electrical And Computer Engineering Akashi National College Of Technology
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Okuda M
The Faculty Of Environmental Engineering The University Of Kitakyushu
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Okuda Masahiro
Department Of Physics And Electronics University Of Osaka Prefecture
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Okuda Masahiro
The Faculty Of Environmental Engineering The University Of Kitakyushu
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Takahashi Shin-ichi
The Faculty Of Electronics And Electrical Engineering Keio University
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Okuda M
Department Of Physics And Electronics University Of Osaka Prefecture
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Ohmukai Masato
Department Of Electrical And Computer Engineering Akashi National College Of Technology
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Okuda M
Department Of Electrical And Computer Engineering Akashi National College Of Technology
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IKEHARA Masaaki
the Faculty of Environmental Engineering, The University of Kitakyushu
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Ikehara M
The Faculty Of Environmental Engineering The University Of Kitakyushu
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