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据Colletti报道对检测中耳传育特性的细小改变多场率较室压声颀测量比单一频率测量敏感。文章采用多频率（250～2000Hi）探测音的中耳分析仪（Gra－sonStadler33型）对正常和各种病变耳进行鼓室压产顺测量，比较病耳与正常耳的共振频率即可推测中耳的病变情况。实验取正常受试
According to Colletti, a small change in the detection of middle ear delivery characteristics is more sensitive to room temperature measurements than to single-frequency measurements. In this study, tympanostomy was performed on normal and various diseased ears by multi-frequency (250 ~ 2000Hi) detection of middle ear analyzer (Gra-son Stadler33 type). Comparing the resonance frequency of diseased and normal ears, Lesions. Take the normal experiment