Upper panels: Cross section (top) and floorplan (middle) of the underground station environment with dimensions in meters. Lower panel: Magnified view of the area with receivers (denoted with R) (R1–5, yellow head and microphone symbols) and sources (loudspeaker symbols) indicating their orientation in the horizontal plane; all were located at 1.6 m height. The blue loudspeakers are part of scene 1 and the red loudspeakers of scene 2. Green loudspeakers can be used in both scenes for, e.g., interfering sources.