Simulation of Ear Diseases

K. Pellant, K. Přikryl, P. Pejchal, and D. Dušek (Czech Republic)

Keywords

Ear, sound transfer function, acoustic modelling, finiteelement method

Abstract

The eigenvalue problem and harmonic analysis is solved on the finite element model of the external outer ear canal. The absorption of the canal walls, the external and middle ear cavity subsystems, the elastic tympanic membrane and middle ear ossicle chain is considered. The results of the mathematical modelling are compared with experimental measurements on physical models. The calculations support hypothesis of possible influence of external ear canal on the enhancement of hearing sensitivity in 2 - 4 kHz frequency range. The discussion of the possible influence of exostoses, tympanitis and eardrum perforation on sound perception is performed.

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