Japanese Listeners’ Judgments of Prolongations: With Focus on the Effect of Phonemic Length Contrast
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Purpose: This study examined 1) what the absolute minimal duration of the lengthened Japanese sounds /s/, /ss/, /i/, and /i:/ are that are perceived to be abnormal by native speakers of Japanese; 2) what the relative ratio of a stimulus sound’s original length to its absolute perceptual threshold is; 3) whether differences are observed between short and long fricatives and between short and long vowels; and 4) whether phonemic length contrast affects the perceived abnormality of lengthened speech sounds. Methods: Twelve native speakers of Japanese (2 males, 10 females) listened to the Japanese sounds /s/, /ss/, /i/, and /i:/, each of which was lengthened by 0–400 ms in 20 ms increments. The participants rated whether the sound was normal (0) or abnormal (1). The minimal duration for each lengthened sound to be perceived as abnormal by the participants was calculated by analyzing the receiver operating characteristic curves using Youden’s index. Results: The minimal prolongation duration to be perceived as abnormal was 70 ms for /s/, 130 ms for /ss/, 70 ms for /i/, and 170 ms for /i:/. The percentage increases in duration required to be perceived as abnormal were 106% for /s/, 129% for /ss/, 117% for /i/, and 138% for /i:/. Conclusion: Phonemic length contrast affects the minimal prolongation duration and the percentage increase thresholds at which Japanese listeners perceive speech sounds as abnormally long. The implications of these results were further discussed within a diagnostic context of sound prolongation as one of core behaviors of stuttering.
Abstract
Purpose: This study examined 1) what the absolute minimal duration of the lengthened Japanese sounds /s/, /ss/, /i/, and /i:/ are that are perceived to be abnormal by native speakers of Japanese; 2) what the relative ratio of a stimulus sound’s original length to its absolute perceptual threshold is; 3) whether differences are observed between short and long fricatives and between short and long vowels; and 4) whether phonemic length contrast affects the perceived abnormality of lengthened speech sounds. Methods: Twelve native speakers of Japanese (2 males, 10 females) listened to the Japanese sounds /s/, /ss/, /i/, and /i:/, each of which was lengthened by 0–400 ms in 20 ms increments. The participants rated whether the sound was normal (0) or abnormal (1). The minimal duration for each lengthened sound to be perceived as abnormal by the participants was calculated by analyzing the receiver operating characteristic curves using Youden’s index. Results: The minimal prolongation duration to be perceived as abnormal was 70 ms for /s/, 130 ms for /ss/, 70 ms for /i/, and 170 ms for /i:/. The percentage increases in duration required to be perceived as abnormal were 106% for /s/, 129% for /ss/, 117% for /i/, and 138% for /i:/. Conclusion: Phonemic length contrast affects the minimal prolongation duration and the percentage increase thresholds at which Japanese listeners perceive speech sounds as abnormally long. The implications of these results were further discussed within a diagnostic context of sound prolongation as one of core behaviors of stuttering.
참고문헌 (28)
- Brown, S. F., "The loci of stuttering in the speech sequence", The Journal of Speech Disorders, 10(3), pp.181~192 (1945)
- Cordes, A. K., "Individual and consensus judgments of disfluency types in the speech of persons who stutter", Journal of Speech, Language, and Hearing Research, 43(4), pp.951~964 (2000)
- Gregory, H. H., "Stuttering Therapy: Rationale and Procedures" (2003), Allyn and Bacon
- Guitar, B., "Stuttering: An Integrated Approach to Its Nature and Treatment" (1998), Williams & Wilkins
- Jones, K., "Duration, Rate, and Phoneme-Type Effects on Listeners’ Judgments of Prolongations", Poster presented at the annual meeting of the American Speech-Language-Hearing Association (2005)
- Kawahara, S., "Handbook of Japanese Phonetics and Phonology", pp.43~78 (2015), De Gruyter Mouton
- Kawai, N., "Listeners’ Perception of Digitally Manipulated Moments of Audible Hesitations", Poster presented at the annual meeting of the American Speech-Language-Hearing Association (2012)
- Kawai, N., "Identification and Discrimination of Phoneme Prolongation", Poster presented at the annual meeting of the American Speech-Language-Hearing Association (2005)
- Kawai, N., "Listeners’ identification and discrimination of digitally manipulated sounds as prolongations", The Journal of the Acoustical Society of America, 122(2), pp.1102~1110 (2007)
- Kubozono, H., "Consonant gemination in Japanese loanword phonology", Current Issues in Unity and Diversity of Languages: Collection of the Papers Selected from the 18th International Congress of Linguistics, pp.953~973 (2009), Linguistic Society of Korea
- Lee, S. W., "Fluency Disorders" (2005), Sigma Press
- Lingwall, J. B., "Perceptual Boundaries for Judgments of “Normal,” “Abnormal,” and “Stuttered”Prolongations", Poster presented at the annual meeting of the American Speech-Language-Hearing Association (1979)
- Lisker, L., "Some effects of context on voice onset time in English stops", Language and Speech, 10(1), pp.1~28 (1967)
- Logan, K. J., "Fluency Disorders" (2015), Plural Publishing
- Obuchowski, N. A., "Receiver operating characteristic(ROC)curves : Review of methods with applications in diagnostic medicine", Physics in Medicine and Biology, 63(7), pp.07TR01~ (2018)
- 박진, "‘ㅅ’ 연장음에 대한 일반인과 언어재활사 간의 지각 비교", Audiology and Speech Research, 14(3), pp.184~193 (2018), 한국청각언어재활학회
- Pisoni, D. B., "Some effects of laboratory training on identification and discrimination of voicing contrasts in stop consonants", Journal of Experimental Psychology : Human Perception and Performance, 8(2), pp.297~314 (1982)
- Pisoni, D. B., "The Development of Speech Perception: The Transition from Speech Sounds to Spoken Words", pp.121~166 (1994), The MIT Press
- Rami, M. K., "Choral reading with filtered speech : Effect on stuttering", Perceptual and Motor Skills, 100(2), pp.421~431 (2005)
- Rücker, G., "Summary ROC curve based on a weighted Youden index for selecting an optimal cutpoint in meta-analysis of diagnostic accuracy", Statistics in Medicine, 29(30), pp.3069~3078 (2010)
- Susca, M., "Listener perceptions along a fluency--disfluency continuum : A phenomenological analysis", Journal of Fluency Disorders, 27(2), pp.135~161 (2002)
- Susca, M., "Effects of Age and Gender on Perceptions of Stuttering and Fluency", Poster presented at the annual meeting of the American Speech-Language-Hearing Association (2001)
- Tajima, K., "Training English listeners to perceive phonemic length contrasts in Japanese", The Journal of the Acoustical Society of America, 123(1), pp.397~413 (2008)
- Tsujimura, N., "An Introduction to Japanese Linguistics" (1996), Blackwell
- Van Riper, C., "The Nature of Stuttering" (1982), Prentice-Hall
- 윤영숙, "한국어 리듬구조에 미치는 L1의 영향: 일본인 학습자를 중심으로", 말소리와 음성과학, 10(4), pp.45~52 (2018), 한국음성학회[DOI]
- Zebrowski, P. M., "Duration of the speech disfluencies of beginning stutterers", Journal of Speech and Hearing Research, 34(3), pp.483~491 (1991)
- Zebrowski, P. M., "Duration of sound prolongation and sound", syllable repetition in children who stutter : Preliminary observations, 1994, pp.37(2), 254~263