Reducing Stopband Peak Errors of R-Regular 4th-Band Linear Phase FIR Filters by Superimposing (Digital Signal Processing)
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概要
- 論文の詳細を見る
R-regular Mth band filters are an important class of digital filters and are used in constructing Mth-band wavelet filter banks, where the regularity is essential. But this kind of filter has larger stopband peak errors compared with a minimax filter of the same length. In this paper, peak errors in stopband of R-regular 4th-band filters are reduced by means of superimposing two filters with successive regularities. Then the stopband peak errors in the resulting filters are compared with the original ones. The results show that the stopband peak errors are reduced significantly in the synthesized filter that has the same length as the longer one of the two original filters, at the cost of regularity.
- 社団法人電子情報通信学会の論文
- 2006-02-01
著者
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Zhang X
The Department Of Information And Communication Engineering The University Of Electro-communications
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PE LinnAung
Intevac Asia Pte. Ltd.
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YOSHIKAWA Toshinori
the Department of Electrical Engineering, Nagaoka University of Technology
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TAKEI Yoshinori
the Department of Electrical Engineering, Nagaoka University of Technology
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ZHANG Xi
the Department of Information and Communication Engineering, The University of Electro-Communication
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SUGITA Yasunori
the Department of Electrical Engineering, Nagaoka University of Technology
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Takei Y
The Department Of Electrical Engineering Nagaoka University Of Technology
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Sugita Yasunori
The Department Of Electrical Engineering Nagaoka University Of Technology
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Yoshikawa T
The Department Of Electrical Engineering Nagaoka University Of Technology
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Zhang Xiaoxing
Department Of Information Science And Control Engineering Graduate School Of Engineering Nagaoka Uni
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