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Figure 1


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First approach to model the effects of fluid in the middle ear. Left: Acoustic input impedance at the eardrum ZD and eardrum acoustic shunt impedance Zac for different factors of eardrum area. Middle: Ear canal impedance for different factors of eardrum area resulting from the model using an ear canal radius of 1.7 mm and an ear canal length of 14 mm. Right: Ear canal impedances measured in infants’ ears with middle ear effusion from [7].

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