감각신경성난청인의 비선형 주파수압축보청기 착용효과: 사례보고
Effects of Non-linear Frequency Compression Hearing Aids for Subjects with Sensorineural Hearing Loss: Case Report
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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 lossbilaterally 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.
Abstract
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 lossbilaterally 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.
참고문헌 (16)
- 김진숙, "한국표준 일반용 단음절어표 개발", 청능재활, 4(2), pp.126~140 (2008)
- 이경원, "비선형 보청기의 전기음향적 조절에 따른 역동범위, 신호대잡음비 및 자모음비의 변화와 적합", Audiology and Speech Research, 10(3), pp.190~197 (2014), 한국청각언어재활학회
- 이경원, "한국어음을 이용한다화자잡음의 개발 시안", 청능재활, 4(1), pp.24~27 (2008)
- 주현민, "주파수이동기능 보청기 적합이 고주파수 영역 청력손실자의 한국어 단어인지도에 미치는 영향에 대한 사례", Audiology and Speech Research, 8(2), pp.249~251 (2012), 한국청각언어재활학회
- 한국산업표준, "KS I ISO 8253-3. 음향학-청력검사방법-제3부 : 어음청각검사", 지식경제부 기술표준원, ~ (2009)
- Barker, C., "Fitting low ratio compression to people with severe and profound hearing losses", Ear and Hearing, 22, pp.130~141 (2001)
- Boike, K. T., "Effect of compression ratio on speech recognition and speech-quality ratings with wide dynamic range compression amplification", Journal of Speech, Language, and Hearing Research, 43, pp.456~468 (2001)
- Friesen, L. M., "Speech recognition in noise as a function of the number of spectral channels : Comparison of acoustic hearing and cochlear implants", Journal of the Acoustical Society of America, 110, pp.1150~1163 (2003)
- Galster, J. A., "Spectral iQ: Audibly improving access to high-frequency sounds" (2011), Starkey Laboratories
- Glista, D., "Evaluation of non-linear frequency compression : Clinical outcomes", International Journal of Audiology, 48, pp.632~644 (2009)
- Keidser, G., "The preferred number of channels (one, two, or four) in NAL-NL1prescribed wide dynamic range compression (WDRC)devices", Ear and Hearing, 22, pp.516~527 (2001)
- Kuk, F., "Critical factors in ensuring efficacy of frequency transposition. Part 1: Individualizing the start frequency", Hearing Review, 14, pp.60~67 (2007)
- Reed, C. M., "Discrimination and identification of frequency lowered speech in listeners with highfrequency hearing impairment", Journal of the Acoustical Society of America, 78, pp.2139~2141 (1985)
- Robinson, J. D., "Using transposition to improve consonant discrimination and detection for listeners with severe high-frequency hearing loss", International Journal of Audiology, 46, pp.293~308 (2007)
- Simpson, A., "Improvements in speech perception with an experimental nonlinear frequency-compression hearing device", International Journal of Audiology, 44, pp.281~292 (2005)
- Von Hapsburg, D., "Acceptance of background noise levels in bilingual (Korean-English) listeners", Journal of the American Academy of Audiology, 17, pp.649~658 (2006)