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Audiol > Volume 5(1); 2009 > Article
Audiology 2009;5(1): 6-12.
Published online: December 31, 2009.
doi: http://dx.doi.org/10.21848/audiol.2009.5.1.6
보청기적합공식과 한국의 연구 고찰
이경원1, 김진숙2
1한림국제대학원대학교 청각학과
2한림대학교 자연과학대학 언어청각학부 청각학전공, 청각언어연구소
Review in Hearing Aid Prescription Methods and Its Considerations in Korean Studies
Kyoung-Won Lee1, Jin-Sook Kim2
1Department of Audiology, Hallym Institute of Advanced International Studies, Seoul, Korea
2Department of Speech Pathology and Audiology, College of Natural Science, Hallym University, Chuncheon, Korea
Correspondence  Jin-Sook Kim ,Tel: (033) 248-2213, Fax: (033) 256-3420, Email: jskim@hallym.ac.kr
Received: October 17, 2009;  Accepted: November 18, 2009.  Published online: December 31, 2009.
ABSTRACT
In order to develop Korean hearing aid prescription method, this study examined features of gain, frequency response curves, saturation sound pressure level 90 (SSPL90), output sound pressure level 90 (OSPL90), compression threshold (CT), and compression ratio (CR), and attack time (AT)/release time (RT) of linear and non-linear hearing aids. Futhermore, Korean studies related to characteristics of physique, psychoacoustics, speech and language effects were summarized. Following review and summarization, several suggestions for Korean hearing aid prescription method were also presented. Results showed that there were some differences in gain and frequency response curves, SSPL90 or OSPL90 among each hearing aid prescription methods despite the similarity of race and languages. Several factors were considered for calculating CT, CR, AT and RT, dynamic range, speech audibility, signal-to-noise ratio and tonal quality. However there were no agreements on the calculation of those parameters because several preferred factors were not identical among hearing impaired people. Korean hearing aid prescription method is not developed yet. Currently when the hearing aids are imported, fitting softwares with hearing prescription methods come without consideration of differences in acoustic characteristics of Korean language. In conclusion, we strongly suggest that various fundamental studies should be explored for the effective method for aural rehabilitation in Korean hearing impaired listeners.
Key Words: Fitting formula·Prescription method·Gain·SSPL90·OSPL90.
중심단어: 보청기처방법· 보청기적합공식· 이득· 최대출력.
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