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A R T I C L E I N F O A B S T R A C T Article history: Received: 30 June, 2020 Accepted: 17 July, 2020 Online: 09 August, 2020 Tinnitus is a phenomenon for which the patient hears sound in the absence of any external sound source. To this day, there is no cure for this phantom sound perception. But it can be masked temporarily to help relief the patient’s pain. In order to allow this, a better understanding of the phenomenon is needed. A validated acoustic model of the outer ear developed by the authors is used in this study. This model allows to study the effect of the presence of an anomaly (a cavity, a swelling or a foreign fluid) in the human auditory canal. These anomalies are modeled as a modification of the section of the ear canal or as an alternation of the medium of sound propagation in the ear canal. A parametric study involving the position, width and height of the anomaly as well as the sound velocity in the ear canal is conducted. The results obtained make it possible to conclude on the effect of each parameter on the frequency response of an auditory canal with anomaly.

Study of the Effect of Abnormalities in the External Ear Inducing Hearing Problems