Abstract
Hearing impairment is a problem faced by many people, mostly the elderly population but occurs even in newborns. Experimental tests performed on patients give information of the level of hearing impairment and the place where the problem is located. In order to understand process of hearing and hearing impairments it would be very useful to have a look inside, but it is not possible with any experimental equipment. However, it is possible to make a virtual look inside human auditory system by development of numerical model. Using data obtained by experimental research it is possible to make sufficiently detailed model and use it to gain new knowledge that can help in understanding of hearing process and problems with hearing. In this paper one such model will be presented. The model contains mechanical and fluid elements of the middle and inner ear.
Highlights
There are several parts in human hearing system
To the middle ear is the inner ear with cochlea – bony structure with shape like snail shell
The solutions for displacement of the basilar membrane and pressure of fluid in the chambers were assumed in the following form: U A sin ( t ) U
Summary
There are several parts in human hearing system. The first part is ear with external auditory canal. At the end of external auditory canal, tympanic membrane is placed. There is middle ear in which are placed three small bones: malleus, incus and stapes Those three bones transmit vibrations from tympanic membrane into inner ear. As can be seen from the previous, in terms of physical behaviour, the most important processes are movements of elastic structures in the middle and the inner ear and fluid motion inside cochlear chambers. Those two processes should be modeled in order to simulate physical behavior of human hearing system
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