Movie scenes, especially action sequences, are influenced by the sound effects added in post. For example, in a fight scene the punches can be off by a foot or more but what really sells the illusion is the sound effect of a hard, fleshy hit.
Lots of research has gone into placing the right sound effect at the right time, but what if a completely different sound effect was applied? Would it change our perception of what we see on the screen? That is what Adam Ecker and Laurie Heller sought out to answer. What they found was that depth perception is influenced not only by visual phenomena such as shadows, binocular disparity, and object size, but also by sound. Good to know especially for those action scenes.
