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http://dx.doi.org/10.13064/KSSS.2021.13.1.065

Acoustic features of diphthongs produced by children with speech sound disorders  

Cho, Yoon Soo (Graduate School of Special Education, Dankook University)
Pyo, Hwa Young (Department of Speech and Language Pathology, Chosun University)
Han, Jin Soon (Graduate School of Special Education, Dankook University)
Lee, Eun Ju (Department of Special Education, Dankook University)
Publication Information
Phonetics and Speech Sciences / v.13, no.1, 2021 , pp. 65-72 More about this Journal
Abstract
The aim of this study is to prepare basic data that can be used for evaluation and intervention by investigating the characteristics of diphthongs produced by children with speech sound disorders. To confirm this, two groups of 10 children each, with and without speech sound disorders were asked to imitate the meaningless two-syllable 'diphthongs + da'. The slope of F1 and F2, amount of change of formant, and duration of glide were analyzed by Praat (version 6.1.16). As a result, the difference between the two groups was found in the slope of F1 of /ju/. Children with speech sound disorders had smaller changes in formants and shorter duration time values compared to normal children, and there were statistically significant differences. The amount of change in formant in the glide was found in F1 of /ju, jɛ/, F2 of /jɑ, jɛ/, and there were significant differences in the duration of glide in /ju, jɛ/. The results of this study showed that the range of articulation of diphthongs in children with speech sound disorders is relatively smaller than that of normal children, thus the time it takes to articulate was reduced. These results suggest that the range of articulation and acoustic analysis should be further investigated for evaluation and intervention regarding diphthongs of children with speech sound disorders.
Keywords
diphthongs; speech sound disorder (SSD); spectrogram; acoustic features;
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1 Stokes, S. F., Lau, J. T. K., & Ciocca, V. (2002). The interaction of ambient frequency and feature complexity in the diphthong errors of children with phonological disorders. Journal of Speech, Language & Hearing Research, 45(6), 1188-1201.   DOI
2 Tasko, S. M., & Greilick, K. (2010). Acoustic and articulatory features of diphthong production: A speech clarity study. Journal of Speech, Language, and Hearing Research, 53(1), 84-99.   DOI
3 Yang, B. G. (1993). An acoustical study of Korean diphthongs. Malsori, 25(1), 3-26.
4 Eom, S., & Shin, H. J. (2018). A study on vowel space area and speech intelligibility in children with articulation disorder. Journal of Speech-Language & Hearing Disorders, 27(1), 115-126.   DOI
5 Ferrand, C. T. (2007). Speech science: An integrated approach to theory and clinical practice (2nd ed.). London, UK: Pearson Education.
6 Kim, Y., Weismer, G., Kent, R. D., & Duffy, J. R. (2009). Statistical models of F2 slope in relation to severity of dysarthria. Folia Phoniatrica et Logopaedica, 61(6), 329-335.   DOI
7 Kang, E. (2018). The correlation between speech intelligibility and acoustic measurements in children with speech sound disorders. Journal of The Society of Integrative Medicine, 6(4), 191-206.
8 Kim, S., & Shin, J. (2015). Speech sound disoreders. Seoul: Sigma Press.
9 Kim, Y., & Shin, M. (2004). Urimal test of articulation and phonology(U-TAP). Seoul, Korea: Hakjisa.
10 Kim, Y. T., Seong, T. J., & Lee, Y. K. (2003). Preschool receptive-expressive language scale (PRES). Seoul, Korea: Seoul Community Rehabilitation Center.
11 Lee, H. J. (2012). F2 slopes of Korean diphthongs: Comparison between parkinson's disease groups and normal groups (Master's thesis). Yonsei University, Seoul, Korea.
12 Park, H., Lee, K., & Ahn, D. (2014). Korean-wechsler preschool and primary scale of intelligence (4th ed, K-WPPSI-IV). Seoul, Korea: Hakjisa.
13 Robb, M. P., Bleile, K. M., & Yee, S. S. L. (1999). A phonetic analysis of vowel errors during the course of treatment. Clinical Linguistics & Phonetics, 13(4), 309-321.   DOI
14 Seo, S., & Seong, C. (2015). Acoustic characteristics of the Korean diphthongs of childeren from Korean-Vietnamese multi-cultural environment focusing on the F2 slope. Eoneohag, 72, 201-216.
15 Shin, J. (2011). Korean and speech. Seoul, Korea: Knowledge and Culture.
16 Song, I., & Seong, C. (2018). Characteristics of 2 to 4 year old Korean children's production of monophthongs and diphthongs. Phonetics and Speech Sciences, 10(1), 65-74.   DOI