Rane VP 12 User Guide - Manual (Page 5)

GATE RATIO switch
This switch determines how
much the signal is turned down
when the gate activates. For
gating, effectively turn the signal
off with a low
GATE/EXPANDER
THRESHOLD and high (3:1) GATE
RATIO. For downward expanding,
use a more moderate
GATE/
EXPANDER THRESHOLD setting and
a low (1.5:1) GATE RATIO.
GAIN REDUCTION meter
This gives a visual indication of
how much compression is going
on. The metering is still active in
the bypass mode. This allows
adjustment of the compression
section “on the fly” while in
bypass to visually verify how
different settings will affect the
signal.
BYPASS switch
This switch allows gate/expan-
sion and compression to be
bypassed for easy comparison
between processed and non-
processed signal.
Gate/Expander & Compressor COMPRESSOR RATIO
Determines by how much the
gain is held in check. Remember,
higher ratios mean the compres-
sor works harder, essentially
turning it into a limiter. Ratios
are expressed in
X:1. A 1:1 ratio
is no gain reduction, like being
bypassed. A ratio of
10:1 means
that for every 10 dB of signal over
the threshold point, only 1 dB
gets out—this is considered a
limiter. A straight limiter is
usually preset at
10:1 or higher; a
compressor has a variable ratio
that allows subtle compression to
heavy limiting.
COMPRESSOR
THRESHOLD
This control sets the point above
which the gain is held in check.
The associated red LED indicates
when the threshold has been
reached.
GATE/EXPANDER
THRESHOLD
This control sets the point below
which the output of the VP 12 is
turned down or shut off, depend-
ing on the
RATIO selected. The
associated yellow LED indicates
when the threshold has been
reached.