Interval Properties of Lattice Allpass Filters with Applications
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概要
- 論文の詳細を見る
In practical applications of digital filters it is more realistic to treat multiplier coefficients as finite intervals than restricting them to infinite or very long word-length representations. However, this can not be done if the frequency response performance under interval assumption is difficult to analyze. In this paper, it is proved that stable lattice allpass filters possess bounded continuous phase response when lattice parameters vary in bounded intervals. It is shown that sharp bounds on the interval phase response can be computed easily at an arbitrary frequency using a simple recursive procedure. Application of this property to the problem of finite word-length lattice allpass filter design is also discussed. By formulating this problem as an interval design it is possible to solve it efficiently independent of the number system used to represent multiplier coefficients.
- 社団法人電子情報通信学会の論文
- 1993-10-25
著者
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Nishihara A
Tokyo Inst. Technol. Tokyo Jpn
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FUJII Nobuo
the Faculty of Engineering, Tokyo Institute of Technology
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SAMADI Saed
Department of Electrical Engineering, K. N. T. University of Technology
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Samadi Saed
the Faculty of Engineering, Tokyo Institute of Technology
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Nishihara Akinori
the Faculty of Engineering, Tokyo Institute of Technology
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Samadi Saed
Department Of Electrical Engineering K. N. T. University Of Technology
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Nishihara Akinori
The Faculty Of Engineering Tokyo Institute Of Technology
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Fujii Nobuo
The Faculty Of Engineering Tokyo Institute Of Technology
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