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Paper Abstract and Keywords
Presentation 2014-03-18 15:00
Silent Speech BCI -- Generalization to consonant recognition --
Hiromi Yamaguchi, Ayaka Yamaguchi, Toshimasa Yamazaki (Kyushu Inst. of Tech.), Shin'ichi Fukuzumi (NEC) MBE2013-144
Abstract (in Japanese) (See Japanese page) 
(in English) This study will address itself to a generalization of our previous SSBCI (silent speech Brain-Computer Interface), which had been constructed in terms of vowel recognitions, to consonant recognition. In our experiment, a subject was requested to speak each season (spring, summer, autumn and winter) in Japanese or to silently speak. And we simultaneously measured speech signal, EMG (electromyogram) and 13-ch EEGs. First, using a Kalman filter, we described the relationship between spectrograms of the speech signals and EEGs whose dipole solutions were localized to the Broca’s area. The spectrograms were transformed into vowel and/or consonant sequences, and these relationships were learned by Hidden Markov Model (HMM) with Gaussian mixture densities. Next, we predicted spectrograms for the SS task from the Kalman filter. By were inputting the spectrograms to the HMM, which "season" was silently spoken was successfully determined by the maximal log-likelihood among each HMM output.
Keyword (in Japanese) (See Japanese page) 
(in English) BCI / silent speech / ICA / ECDL / Kalman filter / HMM / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 499, MBE2013-144, pp. 163-166, March 2014.
Paper # MBE2013-144 
Date of Issue 2014-03-10 (MBE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MBE2013-144

Conference Information
Committee NC MBE  
Conference Date 2014-03-17 - 2014-03-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MBE 
Conference Code 2014-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Silent Speech BCI 
Sub Title (in English) Generalization to consonant recognition 
Keyword(1) BCI  
Keyword(2) silent speech  
Keyword(3) ICA  
Keyword(4) ECDL  
Keyword(5) Kalman filter  
Keyword(6) HMM  
1st Author's Name Hiromi Yamaguchi  
1st Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
2nd Author's Name Ayaka Yamaguchi  
2nd Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
3rd Author's Name Toshimasa Yamazaki  
3rd Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
4th Author's Name Shin'ichi Fukuzumi  
4th Author's Affiliation NEC Corporation (NEC)
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Date Time 2014-03-18 15:00:00 
Presentation Time 20 
Registration for MBE 
Paper # IEICE-MBE2013-144 
Volume (vol) IEICE-113 
Number (no) no.499 
Page pp.163-166 
#Pages IEICE-4 
Date of Issue IEICE-MBE-2014-03-10 

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