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Audiol > Volume 4(1); 2008 > Article
Audiology 2008;4(1): 37-47.
Published online: June 30, 2008.
doi: http://dx.doi.org/10.21848/audiol.2008.4.1.37
어음인지역치검사를 위한 학령기용 및 학령전기용 이음절어표 개발
조수진1, 이정학2, 임덕환3, 이경원2, 한희경4
1대불대학교 언어치료청각학과
2한림국제대학원대학교 청각학과
3한림대학교 자연과학대학 언어청각학부
4한림대학교 대학원 언어청각학협동과정
Development of School Aged and Preschool Korean Bisyllabic Word Lists for Speech Recognition Threshold Test
SooJin Cho1, JungHak Lee2, Dukhwan Lim3, KyungWon Lee2, HeeKyung Han4
1Department of Speech Pathology & Audiology, Daebul University, Yeongam, Korea
2Department of Audiology, Hallym Institute of Advanced International Studies, Seoul, Korea
3Division of Audiology and Speech Pathology, Hallym University, Chuncheon, Korea
4Inter-Disciplinary Program of Speech Pathology & Audiology, Graduate School, Hallym University, Chuncheon, Korea
Correspondence  SooJin Cho ,Tel: (061) 469-1482, Fax: (061) 469-1317, Email: sj2434@mail.daebul.ac.kr
Received: April 30, 2008;  Accepted: June 11, 2008.  Published online: June 30, 2008.
ABSTRACT
This study was performed to standardize the Korean bisyllabic word lists for juveniles and preschoolers, which are used for the speech recognition threshold (SRT) test. A set of 50 bisyllabic words for juveniles and 24 words for preschoolers were first selected from previous literatures based on the familiarity, phonetic dissimilarity and normal sampling of Korean speech sounds. Then psychometric function tests for each word were performed for 10 juveniles and 10 preschoolers with normal hearing to choose a more homogeneous group of bisyllabic words with respect to audibility. All test words were randomly presented to each subject at each intensity level from -5 dBHL to 25 dBHL in 5 dB steps for juveniles and -10 dB HL to 30 dB HL in 10 dB steps for preschoolers. For each group, the percentage of correct responses was plotted as a function of intensity level. The slopes and levels at 50% intelligibility of the psychometric function curves for all test words were obtained using the logistic regression equation. The mean slope and threshold were 10.96%/dB (SD 1.63) and 7.89 dBHL (SD 2.48) for juveniles and 6.65%/dB (SD 1.83) and 13.28 dBHL (SD 4.62) for preschoolers. The standard deviation of the intensity in each spectrum of speech sounds was within 10 dB. Based on these results, we finally selected 24 bisyllabic words for juveniles. For preschoolers, we selected 12 words and made a board of pictures composed of 3 rows and 4 columns each of which represents a bisyllabic word. To sum up, these bisyllabic word lists developed in this study are homogeneous with respect to audibility. Before being widely used to hearing-impaired children, however, it may be necessary to verify and revise these lists.
Key Words: Bisyllabic word lists·Familiarity·Homogeneity with respect to audibility·Psychometric function curve· Speech recognition thresholds.
중심단어: 이음절어표· 친숙성· 단어 간 가청도(난이도)의 동질성· 심리음향기능곡선· 어음인지역치.
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