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2-D LMA Filters -Design of Stable Two-Dimensional Digital Filters with Arbitrary Magnitude Function-
https://nitech.repo.nii.ac.jp/records/4132
https://nitech.repo.nii.ac.jp/records/4132f2176603-f470-4c7e-a354-f3ca138e0b3a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文_fulltext (520.9 kB)
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Copyright (c) 1992 IEICE http://search.ieice.org/index.html
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||
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| 公開日 | 2012-11-07 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | 2-D LMA Filters -Design of Stable Two-Dimensional Digital Filters with Arbitrary Magnitude Function- | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| 資源タイプ | ||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||
| 著者 |
Kobayashi, Takao
× Kobayashi, Takao
× Fukushi, Kazuyoshi
× Wu, Yi-Jian
× Imai, Satoshi
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| 著者別名 | ||||||||||||||||||
| 姓名 | Tokuda, Keiichi | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 姓名 | 徳田, 恵一 | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| 姓名 | トクダ, ケイイチ | |||||||||||||||||
| 言語 | ja-Kana | |||||||||||||||||
| 書誌情報 |
en : IEICE transactions on fundamentals of electronics, communications and computer sciences 巻 E75-A, 号 2, p. 240-246, 発行日 1992-02-20 |
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| 出版者 | ||||||||||||||||||
| 出版者 | Institute of Electronics, Information and Communication Engineers | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 0916-8508 | |||||||||||||||||
| item_10001_source_id_32 | ||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AA10826239 | |||||||||||||||||
| 出版タイプ | ||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||
| 内容記述 | ||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||
| 内容記述 | This paper proposes a technique for designing two-dimensional (2-D) digital filters approximating an arbitrary magnitude function. The technique is based on 2-D spectral factorization and rational approximation of the complex exponential function. A 2-D spectral factorization technique is used to obtain a recursively computable and stable system with nonsymmetric half-plane support from the desired 2-D magnitude function. Since the obtained system has an exponential function type transfer function and cannot be realized directly in a rational form, a class of realizable 2-D digital filters is introduced to approximate the exponential type transfer function. This class of filters referred to as two-dimensional log magnitude approximation (2-D LMA) filters can be viewed as an extension of the class of 1-D LMA filters to the 2-D case. Filter coefficients are given by the 2-D complex cepstrum coefficients, i.e., the inverse Fourier transform of the logarithm of the given magnitude function, which can be efficiently computed using 2-D FFT algorithm. Consequently, computation of the filter coefficients is straightforward and efficient. A simple stability condition for the 2-D LMA filters is given. Under this condition, the stability of the designed filter is guaranteed. Parallel implementation of the 2-D LMA filters is also discussed. Several examples are presented to demonstrate the design capability. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
