Masahiro SERIZAWA


Reduced-Reference Video Quality Estimation Using Representative Luminance
Toru YAMADA Yoshihiro MIYAMOTO Masahiro SERIZAWA Takao NISHITANI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/05/01
Vol. E95-A  No. 5  pp. 961-968
Type of Manuscript:  PAPER
Category: Measurement Technology
Keyword: 
video quality estimationreduced referencePSNRreal-time monitoringlow-bit-rate information extraction
 Summary | Full Text:PDF(1.6MB)

Video-Quality Estimation Based on Reduced-Reference Model Employing Activity-Difference
Toru YAMADA Yoshihiro MIYAMOTO Yuzo SENDA Masahiro SERIZAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3284-3290
Type of Manuscript:  Special Section PAPER (Special Section on Image Media Quality)
Category: Evaluation
Keyword: 
video quality estimationreduced referenceactivity
 Summary | Full Text:PDF(419.3KB)

A Packet Loss Recovery Method Using Packets Arrived behind the Playout Time for CELP Decoding
Masahiro SERIZAWA Hironori ITO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/12/01
Vol. E86-D  No. 12  pp. 2775-2779
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
packet loss recoveryspeech codingCELPAMR
 Summary | Full Text:PDF(772.2KB)

A Silence Compression Algorithm for the Multi-Rate Dual-Bandwidth MPEG-4 CELP Standard
Masahiro SERIZAWA Hironori ITO Toshiyuki NOMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/03/01
Vol. E86-D  No. 3  pp. 412-417
Type of Manuscript:  Special Section PAPER (Special Issue on Speech Information Processing)
Category: Speech and Audio Coding
Keyword: 
speech codingCELPsilence compressionVAD
 Summary | Full Text:PDF(2.1MB)

Noise Suppression with High Speech Quality Based on Weighted Noise Estimation and MMSE STSA
Masanori KATO Akihiko SUGIYAMA Masahiro SERIZAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1710-1718
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
noise suppressionspeech enhancementnoise estimationshort time spectral amplitude
 Summary | Full Text:PDF(591.8KB)

A Fast Method of Calculating High-Order Backward LP Coefficients for Wideband CELP Coders
Masahiro SERIZAWA Kazunori OZAWA Atsushi MURASHIMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/04/25
Vol. E83-D  No. 4  pp. 870-875
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech codingcomplexityhigh-order predictionbackward prediction
 Summary | Full Text:PDF(465.8KB)

4 kbps Improved Pitch Prediction CELP Speech Coding with 20 msec Frame
Masahiro SERIZAWA Kazunori OZAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1995/06/25
Vol. E78-D  No. 6  pp. 758-763
Type of Manuscript:  Special Section PAPER (Special Issue on Spoken Language Processing)
Category: 
Keyword: 
speech codingpitch predictionCELPvector quantization
 Summary | Full Text:PDF(504.2KB)

M-LCELP Speech Coding at 4kb/s with Multi-Mode and Multi-Codebook
Kazunori OZAWA Masahiro SERIZAWA Toshiki MIYANO Toshiyuki NOMURA Masao IKEKAWA Shin-ichi TAUMI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/09/25
Vol. E77-B  No. 9  pp. 1114-1121
Type of Manuscript:  Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
speech codingvector quantizationspeech processingdspcellular telephone
 Summary | Full Text:PDF(719.9KB)