Presentation 2019-10-27
Word Recognition using word likelihood vector from speech-imagery EEG
Satoka Hirata, Yurie Iribe, Kentaro Fukai, Kouichi Katsurada, Tsuneo Nitta,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Previous research suggests that humans manipulate the machine using their electroencephalogram called BCI (Brain Computer Interface). However, there are not existed effective methods for speech imagery recognition. In this report, we performed word recognition of 10 numbers using speech-imagery EEG signals that could be measured through a non-invasive technique to reduce user’s burden. After removing the noise contained in EEG signals, line spectra feature was extracted from the amplitude spectra obtained by LPA. Next, word likelihood vector was calculated based on line spectra feature. We carried out the word recognition experiment of 10 numbers using one or the other or both of line spectra and word likelihood vector to clear the effective features. As a result, it was clarified that the likelihood vector based method got the highest accuracy in all features.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Speech-imagery EEG / Word recognition / Likelihood vector
Paper # SP2019-29,WIT2019-28
Date of Issue 2019-10-19 (SP, WIT)

Conference Information
Committee WIT / SP
Conference Date 2019/10/26(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Daiichi Institute of Technology
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Daisuke Wakatsuki(Tsukuba Univ. of Tech.) / Hisashi Kawai(NICT)
Vice Chair Shinji Sakou(Nagoya Inst. of Tech.) / Akinobu Ri(Nagoya Inst. of Tech.)
Secretary Shinji Sakou(Saitama Industrial Tech. Center) / Akinobu Ri(Teikyo Univ.)
Assistant Manabi Miyagi(Tsukuba Univ. of Tech.) / Minako Hosono(AIST) / Aki Sugano(Nagoya Univ.) / Tomoki Koriyama(Tokyo Inst. of Tech.) / Yusuke Ijima(NTT)

Paper Information
Registration To Technical Committee on Well-being Information Technology / Technical Committee on Speech
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Word Recognition using word likelihood vector from speech-imagery EEG
Sub Title (in English)
Keyword(1) Speech-imagery EEG
Keyword(2) Word recognition
Keyword(3) Likelihood vector
1st Author's Name Satoka Hirata
1st Author's Affiliation Aichi Prefectual University(Aichi Prefectual Univ.)
2nd Author's Name Yurie Iribe
2nd Author's Affiliation Aichi Prefectual University(Aichi Prefectual Univ.)
3rd Author's Name Kentaro Fukai
3rd Author's Affiliation Tokyo University of Science(Tokyo Univ. of Science)
4th Author's Name Kouichi Katsurada
4th Author's Affiliation Tokyo University of Science(Tokyo Univ. of Science)
5th Author's Name Tsuneo Nitta
5th Author's Affiliation Waseda University/Toyohashi University of Technology(Waseda Univ./Toyohashi Univ. of Tech.)
Date 2019-10-27
Paper # SP2019-29,WIT2019-28
Volume (vol) vol.119
Number (no) SP-250,WIT-251
Page pp.pp.69-73(SP), pp.69-73(WIT),
#Pages 5
Date of Issue 2019-10-19 (SP, WIT)