The mechanism of the middle ear: I. The two piston problem |
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Authors: | Esser Martinus H. M. |
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Affiliation: | (1) Department of Mathematics, Illinois Institute of Technology, USA |
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Abstract: | The drum, ossicles and oval window of the middle ear can be considered equivalent to a system of two pistons connected by a lever, where the leverage results not only from the combined motion of the three ossicles, but also from the non-rigid fibrated structure of the drum. This paper studies the transmission of sound from air to liquid by means of such a system and finds conditions on the dimensions, mass and elasticity of the system which should be met in a “good” ear. Two methods, based on different conceptions of “good,” are used, and they give similar results. Most of these results are in good quantitative agreement with actual data. |
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