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Audiol > Volume 11(1); 2015 > Article
Audiology 2015;11(1): 63-69.
Published online: January 31, 2015.
doi: http://doi.org/10.21848/audiol.2015.11.1.63
감각신경성난청인의 비선형 주파수압축보청기 착용효과: 사례보고
주연미1, 이경원2
1한림대학교 일반대학원 언어병리청각학과
2한림국제대학원대학교 청각학과
Effects of Non-linear Frequency Compression Hearing Aids for Subjects with Sensorineural Hearing Loss: Case Report
Yeonmi Joo1, Kyoung Won Lee2
1Department of Speech Pathology and Audiology, Graduate School, Hallym University, Chuncheon, Korea
2Department of Audiology, Hallym University of Graduate Studies, Seoul, Korea
Correspondence  Kyoung Won Lee ,Tel: (02) 2051-4951, Fax: (02) 3453-6618, Email: leekw@hallym.ac.kr
Received: December 2, 2014; Revised: January 16, 2015   Accepted: January 19, 2015.  Published online: January 31, 2015.
The purpose of this study was to report three cases about how aided hearing threshold levels, word recognition score (WRS) and subjective responses changed when the frequency compression (FC) function was deactivated or activated in non-linear frequency compression hearing aid. Three subjects (6 ears) with sensorineural hearing loss bilaterally and with no history of wearing hearing aids before participated in this study. All the participants wore receiver-in-the canal type digital hearing aids with 20 channels. After the FC function was activated, the results showed better aided hearing threshold levels by 5 ~ 20 dB and improved WRS by 6 ~ 14% mostly in high frequency range compared to those of non-frequency compression (NFC). Their subjective responses of sound qualities showed positively better compared to those of the NFC. This study strongly suggests that in case of people whose hearing loss is severe in the high frequency range, FC hearing aids can help to result in better WRS. However, the future study to accurately evaluate an effect of FC hearing aid used for subjects with sensorineural hearing loss will need more elaborate design and to evaluate the changes of gain in both psychosocial and listening-environmental aspects by using other questionnaires.
Key Words: Frequency lowering, Frequency compression, Hearing aid, Frequency compression threshold, Frequency Compression ratio, Sensorineural hearing loss
중심단어: 주파수하강, 주파수압축, 보청기, 주파수압축 역치, 주파수압축비, 감각신경성난청
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