순수 외이도 공명

다국어 초록 (Multilingual Abstract)

External auditory canal (EAC) resonance occurs in the closed-end of a tube near the ear drum. However, the gain of EAC resonance cannot be measured because it occurs inside the human body. Real ear unaided responses (REURs) include both the acoustic reflection of the pinna, skull, torso and the resonance gain of the external ear. The concha cavity resonance (CC resonance) can be measured if EAC is obstructed. Therefore, EAC resonance can be calculated by subtracting the CC resonance from REURs. The aim of this study is to find the gain of the EAC resonance in normal Korean adults and provide the basic information for hearing aid fitting and further research in the field of audiological rehabilitation. Twenty-none normal adults (58-ears) participated in this study. The frequency range of EAC resonance was observed from 80㎐ to 4,000㎐ at 0° and from 600㎐ to 3,700㎐ at 45°. The maximum resonance frequency was recorded at 2,619(±288.7)㎐ at azimuth 0° and 2,613.8(±381.8)㎐ at azimuth 45°. The mean of maximum resonance gain was recorded at 13.2(±3.5)㏈ and 12.3(±3.4)㏈, respectively.

참고문헌 (Reference)

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