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© 2003 Shure Incorporated DFR22 Software Guide 74
Ducker
Parameter Window Features
1) Transfer Curve Graph
The transfer curve graph displays the threshold level as a graphical element that you can position with the mouse.
2) Threshold Slider
The position of the threshold slider corresponds to the setting in the threshold control. You can drag this slider
with the mouse, left and right along the top edge of the transfer curve graph, to change the threshold setting.
3) Gain Reduction Meter
This meter indicates the total gain increase or reduction you are achieving on the ducked signal(s) with the cur-
rent processor settings. This feature can be toggled off and on by selecting the [Options>Gain Reduction
Meter] menu option. Its default status is on.
4) Transfer Curve Meter
In Live Mode, this meter depicts the paging signal’s input level, so you can set the threshold above ambient
noise. This feature can be toggled off and on by selecting the [Options>Transfer Curve Meter] menu option. Its
default status is on.
Threshold Exceeded Indicator.
Threshold
This controls the gain level the paging signal must reach before the processor attenuates the
ducked signals. You can change the value by clicking on the spin buttons or by typing in a specific
value ranging from +20 dB to –60 dB. The default value is 0 dB.
Attenuation
This controls the amount of gain reduction applied to the ducked signals when the paging signal
exceeds the threshold. You can change this value by clicking on the spin buttons or by typing in a
specific value ranging –1 dB to –INF. The default value is –40 dB.
Attack
[This controls the amount of time it takes the processor to fully reduce the ducked signals' gain,
once the paging signal crosses the threshold. You can change the attack time by clicking on the
spin buttons or by typing in a specific value. The range of available values is from 1 to 5000 ms.
Hold
This controls the amount of time the processor continues to attenuate the ducked signals once the
paging signal has dropped back below the threshold. You can change this value by clicking on the
spin buttons or typing in a specific value. The range of available values is from 1 ms to 10,000 ms.
Note: You may experience reduced software performance if you have a large number of meters
active overall in the DFR22 software. You can selectively turn off either the transfer curve
meter or the gain reduction meter, or both, from the [Options] menu.
Signal level has exceeded the threshold
This indicator appears lighted in yellow when
the input signal to the processor block exceeds
the specified threshold.
Signal level has not reached the threshold