Phase Correlation - Wohler AMP1-E8DA User Manual

C h a p t e r 3 A u d i o C o n f i g u r a ti o n
P h a s e C o r r e l a t i o n

Phase Correlation

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© 2 0 1 1 Wo h l e r Tec h n o l o g i e s , I n c. A l l r i g h t s r e s er ve d .
Pressing the 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
buttons are displayed until you unmute the system. See
below.
Table 3–2 Mute Mode Functionality
Button Press
1st Mutes both left and right speakers
2nd Mutes the left speaker
3rd Mutes the right speaker
4th Returns the system to normal operation
Muting functions affect the signals to the speakers/headphones and
the rear panel
Selected/Downmix Analog Output
Muting does not affect the Metered Analog Outputs except to defeat
scaling. These outputs remain active even when the mute state is
enabled.
Note:
When the speakers are muted, the gain scaling of the
Metered Analog Outputs
applied during unit muting. Refer to
for more information.

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)
button allows you to step through three mute
is disabled. In addition, all other
Muted State
is defeated so that no scaling is
Table 3–2
connectors.
SDI Inputs on page 35