title: Ray-trace modeling of acoustic Green's function based on the semiclassical (eikonal) approximation.
abstract: The Green's function (GF) for the scalar wave equation is numerically constructed by an advanced geometric ray-tracing method based on the eikonal approximation related to the semiclassical propagator. The underlying theory is first briefly introduced, and then it is applied to acoustics and implemented in a ray-tracing-type numerical simulation. The so constructed numerical method is systematically used to calculate the sound field in a rectangular (cuboid) room, yielding also the acoustic modes of the room. The simulated GF is rigorously compared to its analytic approximation. Good agreement is found, which proves the devised numerical approach potentially useful also for low frequency acoustic modeling, which is in practice not covered by geometrical methods.
authors: Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.
authors: Rok
authors: R
authors: Prislan
authors: School of Applied Sciences, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia.
authors: Gregor
authors: G
authors: Veble
authors: Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.
authors: Daniel
authors: D
authors: Svenšek