ALESIS MULTIMIX 16 - Manual (Page 24)

3 Digital Effects Processor
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CHORUS
These create the effect of multiple voices (or instruments)
sounding at once from a single input.
FLANGE
These create a sweeping, swooshing sound effect that you will
probably recognize.
DELAY
These effects are based on a discreet repetition or echo of the
input.
PITCH
These effects transpose the pitch of the input signal and blend the
effect signal with the original to create harmonies.
MULTI & MULTI II
These are combinations of two or more of the above effects.