Worldizing

Walter Murch explains the technique of "worldizing". This refers to "manipulating sound until it seemed to be something that existed in real space. This refers to playing back existing recordings through a speaker or speakers in real-world acoustic situations, and recording that playback with microphones so that the new recording takes on the acoustic characteristics of the place it was "re-recorded." See also the Walter Murch articles on Filmsound.org for more information on this pioneer of cinema sound and editing techniques.