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Audiol > Volume 8(2); 2012 > Article
Audiology 2012;8(2): 183-189.
Published online: December 31, 2012.
doi: http://doi.org/10.21848/audiol.2012.8.2.183
무오류 음절을 이용한 노인성 난청의 언어인지검사
한우재1,2, Jont B. Allen3
1한림대학교 자연과학대학 언어청각학부
2한림대학교 청각언어연구소
3일리노이대학교 전자컴퓨터공학과
Speech Perception Test of Zero-Error Consonant-Vowel Syllables in Presbycusis
Woojae Han1,2, Jont B. Allen3
1Div. of Speech Pathology and Audiology, College of Natural Science, Hallym University, Chuncheon, Korea
2Research Institute of Audiology and Speech Pathology, Hallym University, Chuncheon, Korea
3Dept. of Electrical and Computer Engineering, Univ. of Illinois at Urbana-Champaign, IL, USA
Correspondence  Woojae Han ,Tel: (033) 248-2216, Email: woojaehan@hallym.ac.kr
Received: October 17, 2012; Revised: December 3, 2012   Accepted: December 7, 2012.  Published online: December 31, 2012.
ABSTRACT
The purpose of this study is to measure speech perception ability in presbycusis, using zero-error consonant-vowel (CV) syllables as a function of signal-to-noise ratio (SNR). Seventeen elder people with symmetric mild-to-moderate sensorineural hearing loss were tested with 14 syllables spoken by two different speakers at four different SNRs. Error rate and entropy calculation were used to analyze data. The results show that both error rate and entropy significantly increased as noise increased. In particular, /ba, va, ga, na/ were affected by noise level in both error rate and entropy, yet /za, Ʒa/ were only in entropy. We conclude that evaluating speech perception ability using zero-error CV syllables might scrutinize the unique characteristics of presbycusis. We also find that entropy analysis is very useful in even including response’s uncertainty which is not found in the typical error rate analysis.
Key Words: Consonant perception, Speech perception, Error rate, Entropy, Signal-to-noise ratio, Hearing-impaired listener
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