Fluid-Structure Finite-Element Modelling and Clinical Measurement of the Wideband Acoustic Input Admittance of the Newborn Ear Canal and Middle Ear

摘要: The anatomical differences between the newborn ear and adult one result in different input admittance responses newborns than those adults. Taking into account fluid-structure interactions, we have developed a finite-element model to investigate wideband of canal middle for frequencies up 10 kHz. We also performed measurements on group 23 infants with ages 14 28 days, from 250 8000 Hz 1/12-octave resolution. Sensitivity analyses were contributions overall responses, as well effects material parameters, measurement location geometrical variability. was validated by comparison our new data literature. provides quantitative understanding middle-ear resonances around 500 1800 Hz, respectively, predicts first resonance mode cavity (around 6 kHz) second standing-wave modes 7.2 9.6 kHz, respectively), which may explain features seen high-frequency-resolution clinical measurements.