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Audiol > Volume 2(1); 2006 > Article
Audiology 2006;2(1): 22-27.
Published online: June 30, 2006.
doi: http://doi.org/10.21848/audiol.2006.2.1.22
한국어 이음절에 관한 역치 및 Psychometric Function 연구
김은옥1, 임덕환2
1중앙대학교 교양학부, 한림대학교 대학원 청각학전공
2한림대학교 언어청각학부 청각학전공, 청각언어연구소
Thresholds and Psychometric Functions of Korean Bisyllabic Words
Eun-Ok Kim1, Dukhwan Lim2
1Liberal Arts, Jungang University, Graduate Program in Audiology, Hallym University, Chuncheon, Korea
2Section of Audiology, Audiology and Speech Pathology Research Institute, Hallym University, Chuncheon, Korea
Correspondence  Dukhwan Lim ,Tel: (033) 248-2217, Fax: (02) 6280-9133, Email: dlim@hallym.ac.kr
Received: January 21, 2006;  Accepted: April 16, 2006.  Published online: June 30, 2006.
ABSTRACT
English spondaic words are assumed to be homogeneous with respect to intelligibility in determining the speech reception threshold (SRT). Equal intelligibility requires that the words should be comparable for all signal levels. In this experiment, the 90 Korean bisyllabic words were presented to 20 subjects at intensity levels ranging from -10 to 18 dBHL. The percentage of repeating each word was plotted as a function of intensity level to show psychometric functions of each word. Using a logistic regression equation, we obtain 50% point (threshold) for each word and were able to predict the percent correct for a range of -10 to 18 dBHL in 1 dB increment step. The purpose of this study was to report word thresholds of Korean bisyllabic words and to generate psychometric functions of these words. Thorough studies should be preceded on characteristics of Korean bisyllabic words for the selection of SRT materials. It was concluded that the criteria suggested by Hudgins et al. (1947) should be considered selectively with the characteristics of Korean language in developing Korean SRT materials.
Key Words: Threshold·Psychometric function·Bisyllabic word.
중심단어: 역치· 심리음향곡선· 이음절어.
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