Surround sound audio is, simply put, sound that completely surrounds you. It means a speaker in virtually every corner of the room, projecting high-quality digital sound at you from all angles just as though you were in a theater.
Oh, but there’s so much more. It also means sound diversification, with deep, thunderous bass rumbling the floorboards as an explosion happens on screen, and subtle sound effects skittering and tapping behind you in a suspenseful scene. For music, it’s pure envelopment in the song you’re listening to.
In terms of nuts and bolts, it means a set of speakers, usually five including the all-important “center speaker,” and a subwoofer for powerful bass. This is where the term “5.1” comes from -- five speakers and a subwoofer. Below are definitions of the various parts of a surround sound system, as well as definitions of the various systems themselves.
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