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In the cases of significant hearing loss affecting the auditory ossicles, it is possible to attach an implant. In such
cases, the implant is responsible for the movement of the stapes. However, the eardrum is not removed, it remains
in the system, forcing movement of the first auditory ossicle – the malleus. The aim of this research was to present
the results of stapes vibrations in the human ear with an implant under dual excitation both from the eardrum and
the implant using Lumped Parameter Model with 5 degrees of freedom. The model incorporates the masses of all
three auditory ossicles, as well as additional masses from the implant. The delay in the system caused by the signal
reaching the implant is also considered. The results relate to the work that was later transformed into an ASTM
standard for ear testing ensuring the accuracy of the findings.
