Atsushi NAKAMURA


Chip Level Simulation of Substrate Noise Coupling and Interference in RF ICs with CMOS Digital Noise Emulator
Naoya AZUMA Shunsuke SHIMAZAKI Noriyuki MIURA Makoto NAGATA Tomomitsu KITAMURA Satoru TAKAHASHI Motoki MURAKAMI Kazuaki HORI Atsushi NAKAMURA Kenta TSUKAMOTO Mizuki IWANAMI Eiji HANKUI Sho MUROGA Yasushi ENDO Satoshi TANAKA Masahiro YAMAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/06/01
Vol. E97-C  No. 6  pp. 546-556
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
substrate couplingpower delivery networknoise interferencewireless communication
 Summary | Full Text:PDF(5.2MB)

Wide-Tuning-Wavelength-Range LGLC Laser with Low-Loss Dual-Core Spot Size Converter
Takanori SUZUKI Hideo ARIMOTO Takeshi KITATANI Aki TAKEI Takafumi TANIGUCHI Kazunori SHINODA Shigehisa TANAKA Shinji TSUJI Tatemi IDO Jun IGRASHI Atsushi NAKAMURA Kazuhiko NAOE Kenji UCHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/07/01
Vol. E95-C  No. 7  pp. 1272-1275
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
semiconductor laserslaser tuningoptical filter
 Summary | Full Text:PDF(940.5KB)

Model Shrinkage for Discriminative Language Models
Takanobu OBA Takaaki HORI Atsushi NAKAMURA Akinori ITO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/05/01
Vol. E95-D  No. 5  pp. 1465-1474
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
model shrinkage problemdiscriminative language modellinear modelfeature selection
 Summary | Full Text:PDF(466.1KB)

Efficient Combination of Likelihood Recycling and Batch Calculation for Fast Acoustic Likelihood Calculation
Atsunori OGAWA Satoshi TAKAHASHI Atsushi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/03/01
Vol. E94-D  No. 3  pp. 648-658
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
fast acoustic likelihood calculationstate likelihood recyclingbatch state likelihood calculationcombined acceleration techniqueacoustic backing-off
 Summary | Full Text:PDF(823.2KB)

An Approach for Practical Use of Common-Mode Noise Reduction Technique for In-Vehicle Electronic Equipment
Takanori UNO Kouji ICHIKAWA Yuichi MABUCHI Atsushi NAKAMURA Yuji OKAZAKI Hideki ASAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/07/01
Vol. E93-B  No. 7  pp. 1788-1796
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Electromagnetic Compatibility Technology in Conjunction with Main Topics of EMC'09/Kyoto)
Category: Transmission Lines and Cables
Keyword: 
EMIcommon-mode currentoptimization algorithmECU
 Summary | Full Text:PDF(2MB)

Improved Sequential Dependency Analysis Integrating Labeling-Based Sentence Boundary Detection
Takanobu OBA Takaaki HORI Atsushi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/05/01
Vol. E93-D  No. 5  pp. 1272-1281
Type of Manuscript:  PAPER
Category: Natural Language Processing
Keyword: 
sequential dependency analysislabelingCRFsentence boundary detection
 Summary | Full Text:PDF(512.1KB)

Speech Recognition Based on Student's t-Distribution Derived from Total Bayesian Framework
Shinji WATANABE Atsushi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 970-980
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
speech recognitiontotal Bayesian framework VBECBayesian predictionstudent's t-distribution
 Summary | Full Text:PDF(574.8KB)

Production-Oriented Models for Speech Recognition
Erik MCDERMOTT Atsushi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 1006-1014
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
speech recognitionspeech productionarticulatory modelinglinear dynamical systems
 Summary | Full Text:PDF(566.6KB)

Selection of Shared-State Hidden Markov Model Structure Using Bayesian Criterion
Shinji WATANABE Yasuhiro MINAMI Atsushi NAKAMURA Naonori UEDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/01/01
Vol. E88-D  No. 1  pp. 1-9
Type of Manuscript:  Special Section PAPER (Special Section on the 2003 IEICE Excellent Paper Award)
Category: 
Keyword: 
speech recognitionshared-state HMMmodel structure selectionvariational BayesBayesian criterion
 Summary | Full Text:PDF(521.1KB)

A Speech Translation System Applied to a Real-World Task/Domain and Its Evaluation Using Real-World Speech Data
Atsushi NAKAMURA Masaki NAITO Hajime TSUKADA Rainer GRUHN Eiichiro SUMITA Hideki KASHIOKA Hideharu NAKAJIMA Tohru SHIMIZU Yoshinori SAGISAKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2001/01/01
Vol. E84-D  No. 1  pp. 142-154
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech translation systemreal-world speechtask-alterationcost evaluation and performance evaluation
 Summary | Full Text:PDF(3.8MB)