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© 2003 Shure Incorporated DFR22 Software Guide 76
Gate/Downward Expander
Gate/Downward Expander
The gate and downward expander reduce the output level of the signal, relative to the input level, once the input level drops
below a specified threshold.
Function
Use these processors to reduce or eliminate unwanted background noise. The gate mutes the input signal once it
falls below the specified threshold. The downward expander gradually reduces the gain once the input signal falls
below a the specified threshold, providing more subtle gain reduction than the gate. The gate is ideal when you
need to eliminate low-level noise that otherwise would distract from the program material. Select the downward
expander to somewhat reduce background noise in situations where gating the signal completely off would disrupt
the program.
Parameter Window Features
This section explains the features and parameter controls of the downward expander and gate using the DOWN
EXP as the example, as pictured above in Figure 7-17. These two processors are very similar in operation. Any dif-
ferences between their features and functionality are noted where applicable.
Block Name Description
DOWN EXP Downward Expander
GATE Gate
1
2
3
4
56
FIGURE 7-17: DOWN EXP Window