Sugiyama, Yukiko

写真a

Affiliation

Faculty of Science and Technology, Department of Foreign Languages and Liberal Arts (Hiyoshi)

Position

Associate Professor
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Academic Background 【 Display / hide 】

  • 1995.04
    -
    1999.03

    Keio University, Literature, English

  • 1999.09
    -
    2008.06

    University at Buffalo, The State University of New York, Linguistics

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Research Areas 【 Display / hide 】

  • Humanities & Social Sciences / Linguistics (Phonetics)

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Books 【 Display / hide 】

  • A New Dictionary of English and Linguistics

    Nakano Kouzou, Hattori Yoshihiro, Ono Takahiro, Nishihara Tetsuo, Kaitakusha, 2015.11

  • The Production and Perception of Japanese Pitch Accent

    Yukiko Sugiyama, Cambridge Scholars Publishing, 2012.01

  • An Enterprise in the Cognitive Science of Language: A Festschrift for Yukio Otsu

    Yukiko Sugiyama, Hituzi Shobo Publishing, 2008.03

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Papers 【 Display / hide 】

  • Identification of Minimal Pairs of Japanese Pitch Accent in Noise-Vocoded Speech

    Sugiyama Y.

    Frontiers in Psychology (Frontiers in Psychology)  13 2022.05

    　View Summary

    The perception of lexical pitch accent in Japanese was assessed using noise-excited vocoder speech, which contained no fundamental frequency (fo) or its harmonics. While prosodic information such as in lexical stress in English and lexical tone in Mandarin Chinese is known to be encoded in multiple acoustic dimensions, such multidimensionality is less understood for lexical pitch accent in Japanese. In the present study, listeners were tested under four different conditions to investigate the contribution of non-fo properties to the perception of Japanese pitch accent: noise-vocoded speech stimuli consisting of 10 3-ERBN-wide bands and 15 2-ERBN-wide bands created from a male and female speaker. Results found listeners were able to identify minimal pairs of final-accented and unaccented words at a rate better than chance in all conditions, indicating the presence of secondary cues to Japanese pitch accent. Subsequent analyses were conducted to investigate if the listeners' ability to distinguish minimal pairs was correlated with duration, intensity or formant information. The results found no strong or consistent correlation, suggesting the possibility that listeners used different cues depending on the information available in the stimuli. Furthermore, the comparison of the current results with equivalent studies in English and Mandarin Chinese suggest that, although lexical prosodic information exists in multiple acoustic dimensions in Japanese, the primary cue is more salient than in other languages.

  • The effect of f<inf>o</inf> fall, downstep, and secondary cues in perceiving Japanese lexical accent

    Sugiyama Y., Hui C.T.J., Arai T.

    Journal of the Acoustical Society of America (Journal of the Acoustical Society of America)  150 ( 4 ) 2865 - 2878 2021.10

    ISSN  00014966

    　View Summary

    Lexical pitch accent in Japanese is primarily realized as a steep fall in from an accented syllable into the following one. In addition, when a phrase that contains an accented syllable is followed by another phrase, the following phrase undergoes downstep, a compression of the range. Furthermore, while their acoustic identity is not yet clear, secondary cues to Japanese pitch accent are known to exist. The present study examined how speakers of Tokyo Japanese used acoustic information from these three sources in perceiving lexical pitch accent in Tokyo Japanese. Listeners heard stimuli in which the acoustic cues related to accent were independently manipulated and were asked to identify if a word presented sentence-medially was a final-accented word or its unaccented counterpart. Results found that listeners' judgments of words were most consistent with the presence or absence of downstep. That is, listeners identified that the preceding phrase contained an accented word when the following phrase was downstepped. Listeners also used the fall to determine if the word in question was a final-accented word or an unaccented word. Secondary cues to pitch accent were most weakly related to listeners' identification of accent.

  • Effect of frequency discrimination ability of elderly listeners on Japanese pitch accent pairs

    C. T, Justine Hui, Yukiko Sugiyama, Takayuki Arai

    Proceedings of the 19th International Congress of Phonetic Sciences  2019.08

    Accepted

  • Effects of signal degradation and speaker sex on recognizing Japanese disyllabic words

    Yukiko Sugiyama

    The Acoustical Science and Technology Special Issue for the Commemoration of Universal Acoustical Communication Month 2018 (UAC2018)  2019

    Accepted

  • Perception of Japanese Pitch Accent without F0

    SUGIYAMA Yukiko

    PHONETICA (KARGER)  74 ( 2 ) 107 - 123 2017.04

    Research paper (scientific journal), Single Work, Accepted,  ISSN  0031-8388

    　View Summary

    Phonological contrasts are typically encoded with multiple acoustic correlates to ensure efficient communication. Studies have shown that-such phonetic redundancy is found not only in segmental contrasts, but also in suprasegmental contrasts such as tone. In Japanese, fundamental frequency (F0) is the primary cue for pitch accent. However, little is known about its secondary cues. In the present study, a perception experiment was conducted to examine whether any secondary cues exist for Japanese accent. First, minimal pairs of final-accented and unaccented words were identified using a database, resulting in 14 pairs of words. These words were then produced by a native Tokyo Japanese speaker, and presented to participants in both unedited and edited forms. Edited speech stimuli were created by replacing F0 in the natural speech stimuli with white noise. While word identification by Tokyo Japanese speakers had higher accuracy for natural speech than for edited speech, the accuracy exceeded the chance level for edited speech, suggesting the existence of secondary cues for Japanese accent. Acoustic analysis of the stimuli revealed that relative mean amplitude and relative maximum amplitude were greater for final-accented words than for unaccented words. (C) 2017 S. Karger AG, Basel

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Papers, etc., Registered in KOARA 【 Display / hide 】

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Presentations 【 Display / hide 】

  • The effect of the speaker's gender in perceiving noise-vocoded speech

    SUGIYAMA Yukiko

    Acoustical Society of Japan, 

    2017.03
    , 

    Poster presentation

  • Extracting accent information in noise-vocoded speech in Japanese

    SUGIYAMA Yukiko

    The 170th Meeting of the Acoustical Society of America (Jacksonville, Florida, USA) , 

    2015.11
    , 

    Oral presentation (general), The Acoustical Society of America

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • Examination of the acoustic multidimensionality of Japanese pitch accent and its role in perception

    2019.04
    -
    2024.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Yukiko Sugiyama, Grant-in-Aid for Scientific Research (C), Principal investigator

  • Japanese pitch accent revisited: Quantifying its acoustic properties

    2014.04
    -
    2018.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Yukiko Sugiyama, Grant-in-Aid for Young Scientists (B), Principal investigator

  • An Analysis of Spectral Information in Japanese Accent

    2011.04
    -
    2012.03

    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Yukiko Sugiyama, Grant-in-Aid for Young Scientists (B), Principal investigator

    　View Summary

    This research investigated whether acoustic correlates, other than F0, exist for Tokyo Japanese. Stimuli words were created by removing F0 and replacing its harmonics with white noise. Listeners' accuracy at identifying these words exceeded what was expec

  • Mismatches between the production and perception of Japanese pitch accent

    2009.04
    -
    2010.03

    Japan Society for the Promotion of Science, Grant-in-Aid for Research Activity start-up, Yukiko Sugiyama, Grant-in-Aid for Research Activity Start-up, Principal investigator

    　View Summary

    This research investigated if Tokyo-Japanese pitch accent has an acoustic cue other than the fundamental frequency (=F0). Minimal pairs of final-accented and unaccented words that had relatively high familiarity ratings were identified using a database. The two types of words did not differ reliably in terms of the frequencies of the complete vowel devoicing or the durations of the word-final moras. A perception study that examines an acoustic correlate of accent other than the FO and duration is currently underway.

  • Experimental investigation of the nature of Japanese pitch accent and its mental processes

    2009.04
    -
    2010.03

    Keio University, Keio Gijuku Academic Development Funds, Yukiko Sugiyama, Principal investigator

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Awards 【 Display / hide 】

  • 日本音声学会学術研究奨励賞

    荒井隆行, 今関裕子, 川原繁人, 杉山由希子, 本間武蔵, 増田斐那子, 松井理直, 皆川泰代, 吉村隆樹, 2016.03, 日本音声学会, マイボイス：難病患者様の失われる声を救う

  • 学術研究奨励賞

    川原繁人、荒井隆行、今関裕子、杉山由希子、本間武蔵、増田斐那子、松井理直、皆川泰代、吉村隆樹, 2015.03, Phonetic Society of Japan, マイボイス：難病患者様の失われる声を救う

    Type of Award： Award from Japanese society, conference, symposium, etc.

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Courses Taught 【 Display / hide 】

  • ENGLISH 4

    2024

  • ENGLISH 3

    2024

  • ENGLISH 2

    2024

  • ENGLISH 1

    2024

  • ENGLISH LISTENING 2

    2024

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Memberships in Academic Societies 【 Display / hide 】

  • Acoustical Society of America

    　

  • The Phonological Society of Japan

    　

  • Phonetic Society of Japan

    　

  • Acoustical Society of Japan

    　
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