Holophonic Sound is recordings of sounds the human ear hears in an environment either in nature or in a concert hall. These have been recreated in its original 4 Dimensions: 3 for location and 1 for time. Using this new technology one experiences seeing in space what they hear in time!

"In the movie Star Wars, Luke Skywalker's adventure begins when a beam of light shoots out of the robot Artoo Detoo and projects a miniature three-dimensional image of Princess Leia. Luke watches spellbound as the ghostly sculpture of light begs for someone named Obi-wan Kenobi to come to her assistance. The image is a hologram, a three-dimensional picture made with the aid of a laser." Michael Talbot: The  Holographic Universe.

Argentinian physiologist Hugo Zuccarelli recently developed a new recording technique that allows one to create what amounts to holograms made out of sound instead of light.

http://www.acousticintegrity.com/acousticintegrity/Hugo_Zuccarelli.html