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Sound transmission to inner ear

Sound transmission to inner ear. Impedance mismatch between air in middle ear and fluid in inner ear To compensate: Area difference between TM and footplate of the stapes (55/3.2 = 17) Ossicular lever action (1.3/1 = 1.3) Buckling movement of TM (2/1 = 2)

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Sound transmission to inner ear

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  1. Sound transmission to inner ear Impedance mismatch between air in middle ear and fluid in inner ear To compensate: Area difference between TM and footplate of the stapes (55/3.2 = 17) Ossicular lever action (1.3/1 = 1.3) Buckling movement of TM (2/1 = 2) Total pressure increase = 17 * 1.3 * 2 = 44.2 Total dB increase = 33 dB

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