Agc Controls; Table 3-3: Stereo Enhancer Controls - Orban OPTIMOD-FM 8500S Operating Manual

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OPERATION

AGC Controls

Stereo Enhancer Controls
PC Remote Name
Amount
In / Out
Ratio Lim
Diffusion
Style
Depth
•
The two stereo channels are close to identical in magnitude and phase.
In this case, the enhancer assumes that the program material is actually
mono and thus suppresses enhancement to prevent the enhancement
from exaggerating the undesired channel imbalance.
•
The ratio of L–R / L+R of the enhanced signal tries to exceed the threshold set by
the L-R / L+R Ratio Limit control.
In this case, the enhancer prevents further enhancement in order to pre-
vent excess L–R energy, which can increase multipath distortion.
The stereo enhancer has the following controls:
Amount sets the maximum spatial enhancement.
Enhancer In / Out bypasses the stereo enhancer. O
to 0.
A
MOUNT
L-R / L+R Ratio Limit sets the maximum amount of enhancement to limit the
amount of multipath distortion that the stereo enhancement can add. However, if
the original program material exceeds this limit with no enhancement, the enhancer
will not reduce it.
Diffusion applies only to the D
of delayed L–R added to the original signal.
Style sets one of two stereo enhancer types: 222 or D
Depth sets the delay in the delay line. It applies only to the D
The AGC is common to the two-band and Five-Band structures.
Range
0.0 ... 10.0
Out / In
70 ... 100%
Off, 0.3 ... 10.0
222 / Delay
0 ... 10

Table 3-3: Stereo Enhancer Controls

enhancer. This control determines the amount
ELAY
ORBAN MODEL 8500S
is equivalent to setting the
UT
.
ELAY
enhancer.
ELAY