Schematic illustration of the experimental validation location and setup: (top) top-view of the indoor and outdoor environments, including the positions of sound sources (Pos.1–Pos.3) as well as of outdoor and indoor receivers (M1-M4), and (bottom) front-view of the building façade structure, including the positions of outdoor receivers. The centre of the façade in the top and front views is indicated by the purple and red markers, while the distances in the horizontal and vertical planes are denoted by the dashed black andblue lines.