2026-06-01T12:53:58Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/303522026-02-03T10:59:57Zcom_10630_2254col_10630_37953

Influence of the auditory system on pressure distribution in the ear canal García-González, Antonio Luis Castro Egler, Cristina González-Herrera, Antonio Presión - Medición The pressure gain distribution along the ear canal is strongly dependent on boundary conditions, and, in normal conditions, the ear canal produces a 0–20-dB pressure gain close to the tympanic membrane in the 0.1–20kHz range. Additionally, the pressure gain distribution along the ear canal at high frequencies (over the second resonance of the ear canal at 8–9kHz) depends strongly on axis position; therefore, the middle ear transfer functions based on ear canal pressure are also strongly dependent on the measuring point. Objective: The aim of this study is to evaluate the mechanical influence of the tympanic cavity, ossicular chain and tympanic membrane connections on the pressure in the ear canal in the frequency range of 0.1–20kHz when a pressure source is applied to the ear canal entrance. Methods: We have developed numerical simulations for seven different models using the finite element method (FEM). Starting with an external ear canal finite element model, additional elements are coupled or removed to evaluate their contributions. We modeled and simulated the tympanic membrane, ossicular chain, tympanic cavity and a simplified cochlea in seven different combinations. Results: The pressure distribution along the external ear canal is obtained and represented in the 0.1–20kHz range for the seven model configurations 2024-02-12T08:14:48Z 2024-02-12T08:14:48Z 2018 journal article https://hdl.handle.net/10630/30352 10.1142/S0219519418500215 eng open access World Scientific Publishing Company