2. Numerical approaches

Over the last few decades, the various effects influencing sound wave propagation in the vicinity of flat, heterogeneous soils, with or without consideration of atmospheric conditions, have been studied both analytically, numerically and experimentally. Various numerical approaches, such as the Fast-field program without [34] and with turbulence [35] , the Boundary Element Method (BEM) [36][37][38] [39] and, more recently, Meteo-BEM [40] have been successfully...