Ryoji OHBA


Design of FIR Digital Differentiators Using Maximal Linearity Constraints
Ishtiaq Rasool KHAN Masahiro OKUDA Ryoji OHBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 2010-2017
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Filter Design
Keyword: 
maximally linearMAXFLATdigital differentiatorsfullbanddigital filters
 Summary | Full Text:PDF(514.3KB)

Mathematical Proof of Explicit Formulas for Tap-Coefficients of Taylor Series Based FIR Digital Differentiators
Ishtiaq Rasool KHAN Ryoji OHBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/06/01
Vol. E84-A  No. 6  pp. 1581-1584
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
digital filtersFIRMAXFLATdigital differentiatorsmaximally linear
 Summary | Full Text:PDF(132.3KB)

New Efficient Designs of Discrete and Differentiating FIR Hilbert Transformers
Ishtiaq Rasool KHAN Ryoji OHBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/12/25
Vol. E83-A  No. 12  pp. 2736-2738
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
digital filtersHibert transformersMAXFLATFIRdigital signal processing
 Summary | Full Text:PDF(116.6KB)

Efficient Design of Halfband Low/High Pass FIR Filters Using Explicit Formulas for Tap-Coefficients
Ishtiaq Rasool KHAN Ryoji OHBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/25
Vol. E83-A  No. 11  pp. 2370-2373
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
digital filtersmaximally flat digital filterslowpass filtershighpass filters
 Summary | Full Text:PDF(138.3KB)

Digital Differentiators Based on Taylor Series
Ishtiaq Rasool KHAN Ryoji OHBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/12/25
Vol. E82-A  No. 12  pp. 2822-2824
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
FIR filterdigital differentiatorsTaylor seriesfinite difference approximationsdigital signal processing
 Summary | Full Text:PDF(166KB)

Machine Diagnosis Using Acoustic Signal Processing Techniques and Special Sound Collecting Hood
Yoshihito TAMANOI Takashi OHTSUKA Ryoji OHBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/12/25
Vol. E78-A  No. 12  pp. 1627-1633
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic Diagnosis)
Category: 
Keyword: 
machine diagnosisacoustic signal processingfault analysisdigital signal processing
 Summary | Full Text:PDF(739.9KB)