Engineering Commons^™

Sound-Induced In-Plane And Out-Of-Plane Motion Of Human Tympanic Membranes, Morteza Khaleghi, Jeffrey T. Cheng, Cosme Furlong, John J. Rosowski

Morteza Khaleghi

The acousto-mechanical-transformer behavior of the Tympanic Membrane (TM) is determined by its geometry (shape and thickness) and mechanical properties. The questions of “How the TM couples acoustic energy to the ossicles?” and “How TM shape and vibration affect this series of events?” have yet to be fully answered. Holographic studies of 1D vibrations of the TM have been reported by several groups; however, 3D measurements of TM motions are few. In this study, we use full-field-of-view holographic techniques to measure near simultaneously the shape and 3D sound-induced displacement of cadaveric human TMs. Combinations of shape and 3D displacement measurements are …