Details of a Researcher - IGETA, Takako

写真a

IGETA, Takako

Scopus Paper Info

Paper Count: 0 Citation Count: 0 h-index: 2

Citation count denotes the number of citations in papers published for a particular year.

Affiliation

Affiliated organization, Center for Japanese Language

Job title

Associate Professor(without tenure)

Concurrent Post

Faculty of Science and Engineering Global Center for Science and Engineering
Affiliated organization Global Education Center

Education

　

　

　

Sophia University Graduate School of Science and Technology doctoral program
　

　

　

Waseda University Graduate School of Japanese Applied Linguistics master's course

Degree

Sophia University Ph.D.

Professional Memberships

　

　

　

早稲田大学日本語教育学会
　

　

　

Acoustic Society of Japan
　

　

　

Phonetic Society of Japan

Research Areas

Japanese language education

Research Interests

日本語音声学、音声生成、音声知覚、第二言語習得、社会言語学

Papers

学内日本語学習者のレベル判定指標のためのComputer Based Test開発－テスト運用までの過程と課題に関する実践報告－

寅丸真澄, 岩下智彦, 伊藤奈津美, 沖本与子, 井下田貴子, 三谷彩華

第９回CASTEL/J（日本語教育支援システム研究会）国際大会 110 - 125 2021.08 [Refereed]
MOOC受講者の学習行動の傾向

木下直子, 大熊伊宗, 井下田貴子

第 27 回大学教育研究フォーラム 109 - 109 2021.03 [Refereed]
「アカデミック・プレゼンテーション」の実践―多様な専攻の学生で構成されたクラスでの取り組み―

井下田貴子

早稲田日本語教育実践研究 ( 9 ) 2021
Dominance of lower formants of Korean vowels /o/-/u/ in perceptual identification by Seoul dialect listeners

Takako Igeta, Takayuki Arai

ACOUSTICAL SCIENCE AND TECHNOLOGY 40 ( 1 ) 56 - 58 2019.01 [Refereed]

Authorship：Lead author
Reverberation degrades native listener’s perception of Japanese monosyllables and special morae

Takayuki Arai, Eri Osawa, Takako Igeta, Nao Hodoshima

Acoustical Science and Technology 39 ( 3 ) 252 - 255 2018 [Refereed]

　View Summary

In this study, we focused on the speech perception of monosyllables and special morae in Japanese and compared the results under a reverberant condition with those under a non-reverberant condition. From the results of the monosyllables, we confirmed that even native speakers confuse part of the stimuli with relatively long reverberation. Furthermore, for the continua of nonsense words with special morae, we conducted long vs short identification tests. As a result, we found that reverberation affects the listeners’ performance, especially when durational cues are used. Perceiving announcements through a public address system in a large room, such as large halls, subway stations, and airport terminals, is often difficult even for native listeners. For non-native listeners, it is even more difficult. One of the major applications of the present study is providing more intelligible speech signals through such a system in a large room for native and non-native listeners. Testing with a larger set of stimuli and listeners including non-native listeners will be part of our future work.

DOI

Scopus

2

Citation

(Scopus)
Overlapping of Back Vowels /o/ and /u/ by Young Seoul Korean Speakers: Focusing on the Effect of Preceding Consonantal Type and Utterance Unit on Overlap in Formant Distribution

井下田貴子, 廣谷定男, 荒井隆行

音声研究 21 ( 2 ) 53‐60 - 60 2017.08 [Refereed]

Authorship：Lead author

DOI CiNii J-GLOBAL
若年層韓国語ソウル方言話者による後舌母音/o/‐/u/の知覚―低次フォルマントにおける識別境界に着目して―

井下田貴子, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2017 ROMBUNNO.3‐Q‐8 2017.03

Authorship：Lead author

J-GLOBAL
Overlapping of /o/ and /u/ in modern Seoul Korean: focusing on speech rate in read speech

Takako Igeta, Sadao Hiroya, Takayuki Arai

Phonetics and Speech Sciences 9 ( 1 ) 1 - 7 2017.03 [Refereed]

Authorship：Lead author
母語話者に対する残響下の日本語単音節・特殊拍の聴取能低下

荒井隆行, 大澤恵里, 井下田貴子, 程島奈緒

日本音響学会研究発表会講演論文集(CD-ROM) 2016 ROMBUNNO.2‐3‐1 2016.08

J-GLOBAL
Sound change of /o/ in modern Seoul Korean: Focused on relations with acoustic characteristics and perception

Takako Igeta, Mee Sonu, Takayuki Arai

Phonetics and Speech Sciences 6 ( 3 ) 109 - 119 2014.09 [Refereed]

Authorship：Lead author
Lombard効果を応用した残響下の音声明瞭度の改善―日本語母語話者と日本語非母語話者との比較―

井下田貴子, 程島奈緒, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2014 ROMBUNNO.3-Q-42 2014.08

Authorship：Lead author

J-GLOBAL
Lombard効果を応用した残響下の音声明瞭度の改善―日本語非母語話者に対する公共空間での音声案内の作成に向けて―

井下田貴子, 程島奈緒, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2014 ROMBUNNO.2-P5-22 2014.03

Authorship：Lead author

J-GLOBAL
朗読音声を用いた韓国語後舌母音のフォルマント分析―発話速度による音韻性の変動を中心に―

井下田貴子, 鮮于媚, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2013 ROMBUNNO.1-Q-41A 2013.03

Authorship：Lead author

J-GLOBAL
韓国語ソウル方言話者による母音の知覚特性とその評価―先行子音による評価の差に着目して―

井下田貴子, 鮮于媚, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2012 ROMBUNNO.3-Q-5 2012.09

Authorship：Lead author

J-GLOBAL
韓国語の母音発声時に見られる音響的特徴―先行子音が母音の質に与える影響を中心に―

井下田貴子, 鮮于媚, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2012 ROMBUNNO.1-R-24 2012.03

Authorship：Lead author

J-GLOBAL
Hands-on speech science exhibition for children at a science museum.

Takayuki Arai, Kanae Amino, Mee Sonu, Keiichi Yasu, Takako Igeta, Kanako Tomaru, Marino Kasuya

Third Workshop on Child, Computer and Interaction, WOCCI 2012, Portland, OR, USA, September 14, 2012 104 - 107 2012 [Refereed]
Acoustic characteristics of Korean vowels by Seoul Korean young adult speaker: a study for perception experiment

井下田貴子, 鮮于媚, 荒井隆行

聴覚研究会資料 41 ( 7 ) 541 - 545 2011.10

Authorship：Lead author

CiNii
韓国若年層ソウル方言話者による母音の音響的特徴―後舌母音の対立を中心に―

井下田貴子, 鮮于媚, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2011 ROMBUNNO.3-Q-25 2011.09

Authorship：Lead author

J-GLOBAL
韓国語ソウル方言話者の母音フォルマント測定―母音体系の再考に向けたケーススタディ―

井下田貴子, 荒井隆行

日本音響学会研究発表会講演論文集(CD-ROM) 2011 ROMBUNNO.2-P-51(A) 2011.03

Authorship：Lead author

J-GLOBAL
A study on listening and word recognition by Japanese native speakers and problem of loanword pronunciation by Korean Japanese learners

Takako Igeta, Takayuki Arai

37 419 - 436 2011.01 [Refereed]

Authorship：Lead author
A Case Study on Comparison of Male and Female Vowel Formants by Native Speakers of Korean.

Takako Igeta, Takayuki Arai

17th International Congress of Phonetic Sciences, ICPhS 2011, Hong Kong, China, August 17-21, 2011 934 - 937 2011 [Refereed]

Authorship：Lead author
On loanword pronunciation by Korean learners of Japanese: Influence on word recognition for native speaker of Japanese

Takako Igeta

2010.09
-

Takako Igeta

International Conference on Japanese Language Education 2010.07 [Refereed]

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Misc

CJL総合科目群オンライン化のための研究プロジェクト

寅丸, 真澄, 木下, 直子, 久保田, 美子, 井下田, 貴子, 久保, 圭, 濱川, 祐紀代, 伊藤, 奈津美, 沖本, 与子, 齋藤, 智美, 武田, 誠, 鄭, 在喜, 吉田, 好美

早稲田日本語教育実践研究 ( 10 ) 83 - 85 2022.03
Non-native speakers perform poorer than native speakers in Japanese speech recognition in reverberation

E. Osawa, T. Arai, N. Hodoshima, T. Igeta

Journal of the Acoustical Society of America 140 ( 4 ) 3333 - 3333 2016.12

Research paper, summary (international conference)
韓国人学習者の外来語表記における日本語化ストラテジーと、意識に関する一考察

井下田貴子

日本語教育学会，研究集会 2009.10

Research paper, summary (national, other academic conference)

Presentations

若年層韓国語ソウル方言話者に見られる後舌母音/o/ の孤立発話時の音響特徴

井下田貴子

東京音声研究会

Presentation date： 2015.11
Importance of emergency announcement for non-native Japanese listeners

Takako Igeta [Invited]

The Japan Association for Language Teaching

Presentation date： 2015.05

Specific Research

中国人日本語学習者における半母音と拗音の音声生成

2021

　View Summary

中国語を母語とする日本語学習者は、日本語半母音/ju/と/jo/において混同が見られることが報告されている。本研究では、中国人日本語学習者の発話する日本語半母音/ju/と/jo/に関して、昨年度に続き、録音音声を用いて音響分析を行い、特に日中両言語の比較をした。分析の結果、中国語の子音部の第２フォルマントの遷移部の値の平均が日本語の半母音として成立するための値に及ばないケースが多く観察された。日本語母音/u/を中国語母音/ou/で代用することにより混同が生じていることが報告されているが、子音部の変化や、より大きな音声単位の中での調音結合の影響も考慮していると考えられる。
中国人日本語学習者における半母音の音響特徴と知覚の傾向

2020

　View Summary

本研究では、中国人日本語学習者の発話する日本語半母音「ゆ」と「よ」に関して、聴取実験を前提に生成調査を行った。生成調査には、日本語と中国語の両言語で用いられている２字の漢字語を用いた。日本語では「優等」などの４モーラ語でアクセント型は平板型、中国語では一声となる語彙を選択し、6語を対象とした。調査協力者は中国語母語話者で日本語レベルは超級の東北方言を母方言とする30代女性である。調査の結果、日本語と中国語の両言語において、子音部の第２フォルマントの傾きに特徴が見られたことから、今後、持続時間や傾きの角度などを段階的に変化させた刺激を用いて実験を行う必要性がある。

Syllabus

Japanese 2 (1)

School of Fundamental Science and Engineering

2022 spring semester
Japanese 1 (1)

School of Fundamental Science and Engineering

2022 fall semester
Japanese 2 (1)

School of Creative Science and Engineering

2022 spring semester
Japanese 1 (1)

School of Creative Science and Engineering

2022 fall semester
Japanese 2 (1)

School of Advanced Science and Engineering

2022 spring semester
Japanese 1 (1)

School of Advanced Science and Engineering

2022 fall semester
Basic Research Writing Seminar 7-8 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Basic academic presentation for 6-8 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Basic academic presentation for 6-8 (Japanese course for International Student)

Center for Japanese Language

2022 spring semester
Presentation in Japanese for 1-2 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Presentation in Japanese for 1-2 (Japanese course for International Student)

Center for Japanese Language

2022 spring semester
Kanji 3 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Kanji 3 (Japanese course for International Student)

Center for Japanese Language

2022 spring semester
Kanji (For Native Kanji Learners) 2 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Kanji (For Native Kanji Learners) 2 (Japanese course for International Student)

Center for Japanese Language

2022 spring semester
Kanji (For Nonnative Kanji Learners) 2 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Kanji (For Nonnative Kanji Learners) 2 (Japanese course for International Student)

Center for Japanese Language

2022 spring semester
Kanji (For Nonnative Kanji Learners) 1 (Japanese course for International Student)

Center for Japanese Language

2022 fall semester
Kanji (For Nonnative Kanji Learners) 1 (Japanese course for International Student)

Center for Japanese Language

2022 spring semester
Teacher Training of Japanese language 2

Global Education Center

2022 winter quarter
Teacher Training of Japanese language 1

Global Education Center

2022 fall quarter

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Committee Memberships

2022.04

-

Now

Phonetic Society of Japan Planning Committee
2022.04

-

Now

Phonetic Society of Japan International Exchange Committee
2019.12

-

2020.05

Speech Prosody 2020 査読委員