Delay of first side wall reflection in a stereo setup

Enter the distance of one speaker from its nearest side wall (h) and the size of the equidistant stereo triangle (d). The calculator will show how much longer sound reflected from the side wall has to travel than the direct sound in milliseconds.

Distance to side wall (h) m
Size of equidistant stereo triangle (d) m
Reflection from side wall arrives ms
after direct sound