Holman Conducts First Public Demo of "10.2" Surround Sound
Since the earliest days of stereo—the first experiments with more than single-channel sound happened back in the 1930s—recording and playback have been based on a horizontal model: left-center-right, left-rear, right-rear. "Laterality," as it's sometimes called, can be exploited very well in creating plausible sensations of spatial events, especially by film-industry sound engineers. The believable reproduction of music is considerably more problematic.