K. Pellant, K. Přikryl, P. Pejchal, and D. Dušek (Czech Republic)
Ear, sound transfer function, acoustic modelling, finiteelement method
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.