백색잡음 환경에서 귀덮개 사용이 변조이음향방사 신호대잡음비에 미치는 영향

• 영문명: Effects of Earmuff Using on Signal-to-Noise Ratio of Distortion Product OtoAcoustic Emission in White Noise Environments
• 발행기관: 대한치료과학회
• 저자명: 허승덕
• 간행물 정보: 『대한치료과학회지』Vol. 15, No. 2, 69~77쪽, 전체 9쪽
• 주제분류: 의약학 > 재활의학
• 파일형태: PDF
• 발행일자: 2023.11.30

영문 초록

Objective: Earmuff has been shown to attenuate noise and may be useful in boothless audiometry. This study aimed to determine the effect of earmuff use on the signal-to-noise ratio of distortion production otoacoustic emission (DPOAE) in a white noise environment. Method: Participants were 19 young, healthy men and women (38 ears) aged 22.45±1.31 years. The hearing threshold level in 1, 2, 3, and 4 ㎑ did not exceed 15 ㏈ HL. DPOAE was performed at four points per octave in the range 842 to 9,509 ㎐ based on f2. After obtaining the baseline (Base), white noise was presented at 10 ㏈ intervals from 40 to 70 ㏈ SPL. DPOAE was obtained without (WN) and with earmuff (Earmuff). The maximum permissible ambient noise level (MPANL) of the WN and Earmuff were compared (paired t-test). Signal-to-noise ratio (one-way repeated measures ANOVA) and PASS rate (Chi-square test) between WN, Earmuff and Base at the overall frequency, mid-frequency (mid-3-freq), and high-frequency (hi-3-freq) bands were analyzed. Results: There was a difference of 22.19 ㏈ in MPANL between Base and WN (p=.000). There was a significant difference in the SNR between Base and WN from 40 ㏈ SPL, and in PASS rate between Base and Earmuff from 60 SPL (p<.005). Conclusion: In DPOAE, earmuff increase MPANL, which enables recording at up to 60 ㏈ SPL. The SNR in the high-frequency band is more preserved than in the lower, Therefore, it seems advantageous for early detection of cochlear microstructural changes due to noise or aging.

목차

Ⅰ. 서론

Ⅱ. 연구 대상 및 방법

Ⅲ. 연구 결과

Ⅳ. 고찰

Ⅴ. 결론

참고문헌

키워드

Earmuff otoacoustic emission white noise signal-to-noise ratio (SNR)