Naoyuki AIKAWA


A Closed-Form of 2-D Maximally Flat Diamond-Shaped Half-Band FIR Digital Filters with Arbitrary Difference of the Filter Orders
Taiki SHINOHARA Takashi YOSHIDA Naoyuki AIKAWA 
Publication:   
Publication Date: 2019/03/01
Vol. E102-A  No. 3  pp. 518-523
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
2-D diamond-shaped filtermaximally flathalf-band filterarbitrary different filter ordersclosed-form expression
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Design Method for Low-Delay Maximally Flat FIR Digital Differentiators with Variable Stopbands Obtained by Minimizing Lp Norm
Ryosuke KUNII Takashi YOSHIDA Naoyuki AIKAWA 
Publication:   
Publication Date: 2017/07/01
Vol. E100-A  No. 7  pp. 1513-1521
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
digital differentiatorFIR filtermaximally flatlow-delayLp norm
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A Closed-Form Design of Linear Phase FIR Band-Pass Maximally Flat Digital Differentiators with an Arbitrary Center Frequency
Takashi YOSHIDA Yosuke SUGIURA Naoyuki AIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2611-2617
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
digital differentiatormaximally flatband-pass differentiatorsclosed formarbitrary center frequency
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A Design Method for Variable Linear-Phase FIR Filters with Changing Multifactors for Checkweighers
Toma MIYATA Naoyuki AIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/08/01
Vol. E93-A  No. 8  pp. 1400-1407
Type of Manuscript:  Special Section PAPER (Special Section on Signal Processing)
Category: Digital Signal Processing
Keyword: 
variable FIR filterfrequency approximationsemidefinite programmingFarrow structurehigh accuracy checkweighers
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A Design Method for Separable-Denominator 2D IIR Filters with a Necessary and Sufficient Stability Check
Toma MIYATA Naoyuki AIKAWA Yasunori SUGITA Toshinori YOSHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 307-310
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
separable-denominator 2D IIR filtersstability criterionsystem matrixsuccessive projection methods
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Designing Filters by Successive Projection Using Multiple Extreme Frequency Points Based on Fritz John's Theorem
Yasunori SUGITA Naoyuki AIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 2029-2036
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Filter Design
Keyword: 
successive projection methodFritz John's theoremmultiple extreme frequency points
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Designing IIR Digital All-Pass Filters by Successive Projections Method
Hiroyuki SAWADA Naoyuki AIKAWA Masamitsu SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/06/25
Vol. E82-A  No. 6  pp. 1021-1025
Type of Manuscript:  Special Section LETTER (Special Section of Papers Selected from 1998 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC '98))
Category: 
Keyword: 
successive projections methodrational functionIIR filtersallpass filterChebyschev approximation
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FIR Filters with Given Rise Characteristics in the Step Response
Isao OZAWA Naoyuki AIKAWA Masamitsu SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/08/25
Vol. E79-A  No. 8  pp. 1135-1138
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
no ringingrise characteristicsconstrained successive projections methodFIR filters
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