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© 2003 Shure Incorporated DFR22 Software Guide 77
Gate/Downward Expander
1) Transfer Curve Graph
The transfer curve graph displays the threshold level and compression ratio settings as graphical elements that
you can position with the mouse. The resulting transfer curve represents the change in the signal output level.
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 input signal with the current
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) Gain Controls
Use the gain controls to adjust the input and output gain levels. The range of available gain values is between
-12dB and +12dB in 0.5dB increments, with 0dB as the default value. You can change the value using the con-
ventions explained in the Faders section on page 33.
5) Transfer Curve Meter
When you are in Live Mode, this meter depicts the signal's input level and relative output level, so you can
monitor the processor's effect on the current program material. This feature can be toggled off and on by
selecting the [Options>Transfer Curve Meter] menu option. Its default status is on.
6) Ratio Slider
The position of the ratio slider corresponds to the setting in the ratio control. To change the ratio setting, drag
this slider left or right along the bottom edge of the transfer curve graph, using the mouse.
Threshold Exceeded Indicator
Threshold
This indicates the level below which the input signal gain must fall before the processor reduces
it. You can change the value by clicking on the spin buttons, typing in a specific value, or using
the threshold slider at the top edge of the transfer curve graph. The available range of values is
from -80.0dB to 0dB in 0.5dB increments, with a default value of -65.0dB for the gate and -
40.0dB for the downward expander.
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