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Studies on phonetic reduction for natural speech prosody

Research Project

Project/Area Number 18K00549
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 02060:Linguistics-related
Research InstitutionHosei University

Principal Investigator

Tajima Keiichi  法政大学, 文学部, 教授 (70366821)

Co-Investigator(Kenkyū-buntansha) 北原 真冬  上智大学, 外国語学部, 教授 (00343301)
米山 聖子  大東文化大学, 外国語学部, 教授 (60365856)
Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords音声産出 / プロソディー / 弱化 / 強勢 / 外国語学習 / 語彙的要因 / 英語 / 日本語 / 韻律 / 音声コーパス / 韻律的特徴 / 音声知覚 / 英語学習 / 語彙的競合 / 有声・無声 / 促音 / 第二言語学習 / 分節音的特徴 / 音声弱化
Outline of Final Research Achievements

This study aimed to elucidate the factors contributing to the naturalness of prosody in both native and foreign language pronunciation by examining processes of phonetic reduction in languages with stress and those without stress. Results showed that Japanese learners of English insufficiently weaken vowels in English stress compared to native speakers, and that lexical factors observed in Japanese affect the phonetic realization of words differently than in English and other languages.

Academic Significance and Societal Importance of the Research Achievements

研究期間全体を通して,自然なプロソディーが音声においてどのように実現されるのか,自然なプロソディーにおいて弱化がどのように機能するのかを,英語における強勢レベルの違いに関連する弱化,単語の区別などの語彙的要因に関連する弱化など,様々な観点からの実証的研究を実施することで検証した。その結果,外国語における自然なプロソディーの実現においては母語の影響が極めて大きいことや,語彙的要因においては単語間の音声的な差異を強調する強化および差異を弱める弱化の両方が存在することなどが明らかとなった。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (22 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (1 results) Presentation (20 results) (of which Int'l Joint Research: 11 results,  Invited: 2 results) Funded Workshop (1 results)

  • [Int'l Joint Research] California State University Los Angeles/University of Minnesota(米国)

    • Related Report
      2022 Research-status Report
  • [Presentation] Phonetic realization of multiple stress levels by speakers of a non-stress language: A case of Japanese-accented English2023

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, Kiyoko Yoneyama
    • Organizer
      ICPhS2023 (20th International Congress of the Phonetic Sciences)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 学習者の英語発音における3段階の強勢の実現について:ピッチを中心に2023

    • Author(s)
      北原真冬・田嶋圭一・米山聖子
    • Organizer
      日本音声学会2023年(令和5年)度第37回全国大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Is secondary-stress phonetically real for second-language learners? Evidence from Japanese-accented English2023

    • Author(s)
      Kiyoko Yoneyama, Keiichi Tajima, Mafuyu Kitahara
    • Organizer
      Acoustics 2023 Sydney (joint meeting of the Acoustical Society of America and the Australian Acoustical Society)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Vowel reduction by speakers of a non-stress language: A preliminary corpus analysis of Japanese-accented English2022

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, and Kiyoko Yoneyama
    • Organizer
      New Sounds 2022: 10th International Symposium on the Acquisition of Second Language Speech
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 日本人大学生による英語母音弱化の音響特性:発話実験と辞書データの比較による予備的分析2022

    • Author(s)
      米山聖子,北原真冬,田嶋圭一
    • Organizer
      2022年度第36回日本音声学会全国大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 日本語話者による日本語感情音声の知覚:知覚感情・韻律的特徴・声質に注目して2022

    • Author(s)
      中島彩子,田嶋圭一
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Effects of lexical competition on two types of durational contrasts in Japanese: Geminate and VOT2021

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, and Kiyoko Yoneyama
    • Organizer
      JK 29 Satellite Meeting: The 3rd NINJAL-SNU Joint Workshop
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Phonetic realization of vowel reduction by Japanese learners of English: A preliminary corpus analysis2021

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, Kiyoko Yoneyama
    • Organizer
      Workshop on phonetic and psycholinguistic approaches to L2 speech acquisition
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Japanese prosody on English word production: Interaction between voicing and gemination2020

    • Author(s)
      Kiyoko Yoneyama, Mafuyu Kitahara, Keiichi Tajima
    • Organizer
      10th International Conference on Speech Prosody 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of lexical status and competition on the production of voicing contrasts in Japanese: An experimental study2020

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, Kiyoko Yoneyama
    • Organizer
      LabPhon17 (17th biennial conference of the Association for Laboratory Phonology)
    • Related Report
      2020 Research-status Report
  • [Presentation] 日本語感情音声の韻律的特徴:基本周波数・強度・持続時間に注目して2020

    • Author(s)
      中島彩子,田嶋圭一
    • Organizer
      第34回日本音声学会全国大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 日本人英語学習者の弱化母音の実現について:予備的コーパス調査2020

    • Author(s)
      田嶋圭一,北原真冬,米山聖子
    • Organizer
      国立国語研究所プロソディー研究班オンライン研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] Phonetics and phonology of second-language syllable perception2019

    • Author(s)
      Keiichi Tajima
    • Organizer
      Joint meeting of the Korean Society of Phonology, Morphology, and Phonetics, and the English Linguistic Society of Korea
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Lexically conditioned phonetic variation: An experimental test with the singleton-geminate contrast in Japanese2019

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, and Kiyoko Yoneyama
    • Organizer
      ICPhS2019 (19th International Congress of the Phonetic Sciences)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] The effect of lexical competition on realization of phonetic contrasts A corpus study of the voicing contrast in Japanese2019

    • Author(s)
      Mafuyu Kitahara, Keiichi Tajima, and Kiyoko Yoneyama
    • Organizer
      ICPhS2019 (19th International Congress of the Phonetic Sciences)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Voicing Effects on Durational Characteristics of English Words by Japanese Learners: A Preliminary Analysis2019

    • Author(s)
      Kiyoko Yoneyama, Mafuyu Kitahara, and Keiichi Tajima
    • Organizer
      New Sounds 2019 (The 9th International Symposium on the Acquisition of Second Language Speech)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 音響的な特徴が音声による羞恥感情の程度と種類の認知に及ぼす影響 ーピッチと時間に注目してー2019

    • Author(s)
      Yue Wang,田嶋圭一
    • Organizer
      日本音響学会2019年度春季研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] 日本語学習者の促音と非促音の発話特性 -リズム・強さの不自然性の印象と客観的指標との関係-2018

    • Author(s)
      鮮于媚,加藤宏明,田嶋圭一
    • Organizer
      日本音響学会2018年度秋季研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] The effect of lexical competition on realization of phonetic contrasts: The case of voicing in Japanese2018

    • Author(s)
      Mafuyu Kitahara, Keiichi Tajima, & Kiyoko Yoneyama
    • Organizer
      ICPEAL17-CLDC9 (The 17th International Conference on the Processing of East Asian Languages and the 9th Conference on Language, Discourse, and Cognition)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] The effect of lexical competition on phonetic realization of the singleton-geminate stop length contrast in Japanese2018

    • Author(s)
      Keiichi Tajima, Mafuyu Kitahara, & Kiyoko Yoneyama
    • Organizer
      ICPP2018 (5th NINJAL International Conference on Phonetics and Phonology)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Funded Workshop] Workshop on phonetic and psycholinguistic approaches to L2 speech acquisition2021

    • Related Report
      2020 Research-status Report

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Published: 2018-04-23   Modified: 2025-01-30  

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