Sketch of the simulated room in topview with source and receiver positions. The room is 3 meters high. All room corners were shifted by up to 50 cm to prevent strictly parallel walls in the room. This avoids standing waves and strictly repetitive reflection times, and thus introduces a more natural temporal jittering of the room reflections. The receiver was located near the corner in the figure’s top left with a distance of 1.5 m from the walls and at a height of 1.4 m, corresponding to approximately the seating height of a person. Both simulated sound sources had a fixed distance of 5 m to the listener’s position. The condition with the frontal target will be denoted as S₀, the one at 60° as S₆₀.