Yoshinao SHIRAKI


A Rectangular Weighting Function Approximating Local Phase Error for Designing Equiripple All-Pass IIR Filters
Taisaku ISHIWATA Yoshinao SHIRAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2398-2404
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Signal Processing
Keyword: 
all-pass IIR filtersequiripple filtersiteratively reweighted least squares (IRWLS)
 Summary | Full Text:PDF(1.2MB)

A New Class of Binary Constant Weight Codes Derived by Groups of Linear Fractional Mappings
Jun IMAI Yoshinao SHIRAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/10/01
Vol. E89-A  No. 10  pp. 2481-2492
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
binary constant weight codeslower bounds of the number of code wordspermutation representationslinear fractional mappingsPGL2(Fq)modular groups
 Summary | Full Text:PDF(213.3KB)

New Binary Constant Weight Codes Based on Cayley Graphs of Groups and Their Decoding Methods
Jun IMAI Yoshinao SHIRAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/10/01
Vol. E88-A  No. 10  pp. 2734-2744
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
Cayley graphspermutation representationsnonlinear binary codes of constant weightsBuckminster Fullerene
 Summary | Full Text:PDF(319KB)

Optimal Temporal Decomposition for Voice Morphing Preserving Δ Cepstrum
Yoshinao SHIRAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/03/01
Vol. E87-A  No. 3  pp. 577-583
Type of Manuscript:  Special Section PAPER (Special Section on Applications and Implementations of Digital Signal Processing)
Category: Audio/Speech Coding
Keyword: 
voice morphingvoice conversioninterpolation of spectratemporal decompositionspectrum distortionDP matchingΔ cepstrum
 Summary | Full Text:PDF(415.3KB)

Homotopy Equivalent Spectral Transformation and Morse Theory
Yoshinao SHIRAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/09/25
Vol. E78-A  No. 9  pp. 1186-1191
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
algebraic topologyMorse theoryhomotopy equivalencehomologycohomology
 Summary | Full Text:PDF(448.5KB)