Relations between the physiology and acoustics of the outer ear
Combining ear-shape measurement by magnetic resonance imaging (MRI) and acoustic-field visualization by finite-difference time-domain (FDTD) simulation, the first three resonances of the human pinna were investigated across 19 adults (38 ears) and formulae were derived for estimating individual resonances from simple measurements of ear size.
Optimum absorbing boundaries for FDTD simulation of acoustics
For 3D simulation of acoustics with the finite-difference time-domain (FDTD) method, special conditions are needed to absorb all outgoing acoustic waves at the computational domain boundaries, i.e., to suppress artifactual reflections from the boundaries. To this aim, an empirical formula was found for determining the optimum parameters of the outermost, absorbing layers, yielding the highest signal-to-noise ratio.
