ance)?因为不同媒介的声阻抗是不同的РThe role of the middle ear 中耳的作用РThe Ossicles 听小骨РMalleus 锤骨РIncus 砧骨РStapes 镫骨РThree small bones forming a chain between the tympanic membrane and the inner ear?听骨链位于鼓膜和内耳之间,由3块听小骨组成? Airborne sound wave energy es mechanical vibration?空气传导的声波能量转换为机械振动? Compensates for the air - fluid impedance difference?补偿气液相不同媒介的导抗差РGetting sound into a different medium?声音在不同媒介中的传导РThe “stiletto” principle:圆锥效应?Force is collected over a larger area?and focused on a smaller area (B)?作用力在锥底收集后聚焦到锥尖РHow do we test the middle ear??如何检测中耳功能Р中耳测试Р精密的中耳系统?高精度的测试?高质量控制系统РPart of the probe tone is reflected, and some is admitted into the middle ear ?一部分探测音被反射回来,另一部分则进入中耳?The admittance is continuously measured by a microphone ?声导纳通过麦克风持续测量计算出来РAdmittance - letting the sound wave in?声导纳-将声波导入
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