Stereos use basic left and right speakers. In 4 channel stereos the add in 2 more channels to move the sound around you. In 5 channel surround they add a center channel for voice coming from a picture generated in from of you. Helps pull you to the person talking on the screen. 5.1 utilizes this and then adds the .1 which is an effects speaker, the subwoofer. Then you feel the roar of an engine taking off.
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Open Sound System was created in 1992.
Sneaky Sound System was created in 2001.
Massilia Sound System was created in 1984.
Bedlam Sound System was created in 1992.
DTS - sound system - was created in 1991-06.
The use of a sound system is so you can play your ipod out loud
Destruction Sound System was created in 2003-03.
Sound Retrieval System (SRS).
Eight Track Sound System was created in 1999.
Dub Narcotic Sound System was created in 1995.
It has a SigmaTel STAC9750/51 Audio card.