3/2.1 - definition of 3/2.1 by The Free Dictionary
surround sound (redirected from 3/2.1)
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A system of recording and playing back audio that uses four or more separate channels.
(Electronics) a system of sound recording and reproduction that uses three or more independent recording channels and loudspeakers in order to give the impression that the listener is surrounded by the sound sources. Compare quadraphonics
See also ambisonics
n (TV, Radio) → Surround-Sound m; (= sytem) → Surround-Sound-System nt