Specifications

Pro Tools Reference Guide52
Phase Invert
The Phase Invert button at the top of the Input
section inverts the phase (polarity) of the input
signal, to help compensate for phase anomalies
that can occur either in multi-microphone envi-
ronments or because of mis-wired balanced con-
nections.
To enable (or disable) phase inversion on input:
 Click the Phase Invert button so that it is high-
lighted. Click it again so that it is not high-
lighted to disable it.
Input Meters
The Input meters show peak signal levels before
processing:
Dark Blue Indicates nominal levels from –INF to
–12 dB.
Light Blue Indicates pre-clipping levels, from
–12dB to 0dB.
White Indicates full scale levels from 0 dB to
+6 dB.
Gain Reduction Meters
The Input meter can be switched to show Gain
Reduction metering for the processed signal
from 0 dB to –36 dB.
The Gain Reduction meters are usually dis-
played in yellow. When the
Knee setting for ei-
ther or both the Expander and the Compressor is
greater than 0 dB, the Gain Reduction meter dis-
plays the amount of the Knee level in amber over
the meter’s usual yellow display.
To toggle between the Gain Reduction and Input
meters:
 Click the Input/Gain Reduction toggle in the
top right-hand corner of the Input section.
Output
The Output section provides output metering
and controls for adjusting the level of the output
signal.
Toggling between Input and Gain Reduction meters
Output section (5.1 channel format shown)