821016: AMPx-E8 Series User Guide
© 2011 Wohler Technologies, Inc. All rights reserved.
34
Chapter 3
Audio Configuration
Phase Correlation
Pressing the
Mute
button allows you to step through three mute
states and an unmuted state. When the system is in one of the
mute states, all other information normally shown in the LCD such
as the
Input Status Display
is disabled. In addition, all other
buttons are displayed until you unmute the system. See
Table 3–2
below.
Muting functions affect the signals to the speakers/headphones and
the rear panel
Selected/Downmix Analog Output
connectors.
Muting does not affect the Metered Analog Outputs except to defeat
scaling. These outputs remain active even when the mute state is
enabled.
Phase Correlation
1.
Pressing the
button displays the phase correlation indicator in
the LCD screen.
The average correlation (phase) for the signal going through the left
speaker compared to the signal going through the right speaker is
indicated by a stationary block appearing in one of three positions on
the second line of the screen. A moving block indicates an
instantaneous (short term sample) phase correlation. Each of the three
positions has a different meaning.
•
Center
: Only one channel active, or zero (0) correlation between the
two channels
•
Left (-)
: Selected channels are out-of-phase (-1 correlation
maximum)
Table 3–2
Mute Mode Functionality
Button Press
Muted State
1st
Mutes both left and right speakers
2nd
Mutes the left speaker
3rd
Mutes the right speaker
4th
Returns the system to normal operation
Note:
When the speakers are muted, the gain scaling of the
Metered Analog Outputs
is defeated so that no scaling is
applied during unit muting. Refer to
SDI Inputs on page 35
for more information.