Forced perspective in Adachi Museum Garden

The Kikaku waterfall is drawn in as a “shakkei” in Adachi Museum Garden. The audability of the fall inside the garden is limited owing to (a) long distance (b) the true height is only about half of what it looks like and (c) edges surrounding the collecting pool reduce sound levels. The quietness of the fall could make it seem further away than it actually is, thus exemplifying how sound could be used to build a “Forced perspective”.