Takahiro SEKI

A Low-Noise and Highly-Linear Transmitter with Envelope Injection Pre-Power Amplifier for Multi-Mode Radio
Shouhei KOUSAI  Daisuke MIYASHITA  Junji WADATSUMI  Rui ITO  Takahiro SEKIGUCHI  Mototsugu HAMADA  Kenichi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 592-602
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
multi-mode radio,  wideband transmitter,  active matching,  envelope injection, 
  Summary |  Full Text:PDF (2MB)
Dynamic Voltage and Frequency Management for a Low-Power Embedded Microprocessor
Takahiro SEKI  Satoshi AKUI  Katsunori SENO  Masakatsu NAKAI  Tetsumasa MEGURO  Tetsuo KONDO  Akihiko HASHIGUCHI  Hirokazu KAWAHARA  Kazuo KUMANO  Masayuki SHIMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/04/01
Vol. E88-C  No. 4  pp. 520-527
Type of Manuscript: Special Section PAPER (Special Section on Low-Power LSI and Low-Power IP)
Category: Digital
Keyword: 
adaptive supply voltage control,  autonomous clock frequency control,  leakage power compensation,  embedded DRAM,  wideband bus architecture, 
  Summary |  Full Text:PDF (1.6MB)
Noise Robust Speech Recognition Using F0 Contour Information
Koji IWANO  Takahiro SEKI  Sadaoki FURUI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/05/01
Vol. E87-D  No. 5  pp. 1102-1109
Type of Manuscript: Special Section PAPER (Special Section on Speech Dynamics by Ear, Eye, Mouth and Machine)
Category: 
Keyword: 
noise robust speech recognition,  prosody,  fundamental frequency (F0) contour,  multi-stream HMM,  Hough transform, 
  Summary |  Full Text:PDF (1.1MB)