为了解开放式乳突手术和乳突腔填塞对耳道共振的影响,选一侧有开放乳突腔,对侧耳正常者10人为研究对象。年龄37～75岁,平均57岁。用Rastronics CCI-10频响分析仪进行声学测试。耳道共振测试在声学室内进行。声源在受试者面前方一米处,为80dB SPL,频率0.125～8kHz啭声。先将传声探头放在受试者耳廓平齐处进行声级校准,然后经窥耳器将传声探头置于鼓膜外侧记录耳道共振。两耳的共 In order to understand the effect of open mastoid surgery and mastoid cavity packing on the auditory canal resonance, 10 patients with open mastoid cavity and normal contralateral ears were selected as the research object. Age 37 to 75 years old, average 57 years old. Acoustic tests were performed on a Rastronics CCI-10 frequency response analyzer. Ear canal resonance test in the acoustic room. Sound source in front of the subject one meter, 80dB SPL, frequency 0.125 ~ 8kHz 啭 sound. The first sound probe on the subject auricle flush level sound level calibration, and then through the goggles ear probe will be placed outside the tympanic membrane recording ear canal resonance. A total of two ears