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Surround sound
Surround Sound is the concept of expanding the spatial imaging of audio[?] playback from 1-dimension (mono/Left-Right) to 2D or 3D.
This is often performed for a more realistic audio environment[?], actively implemented in cinema sound systems, technical theatre, home entertainment, video arcades[?], computer gaming, and a growing number of other applications.
A currently popular form of surround sound (as of 2003) is Dolby 5.1 Surround[?] Sound.
There are methods of using 1-dimensional (stereo) output to emulate a surround environment. Emulation Methods
Surround sound is not limited to placement of speakers along a flat plane. Vertically-located audio sources can be considered.
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