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© 2003 Shure Incorporated DFR22 Software Guide 46
SECTION 7 Modular Processors
This section describes the features and controls specific to each of the processor block parameter windows. In some
cases, several processor blocks share nearly identical controls, such as the downward expander and gate. In these
instances, the processors are described as a group, using a single parameter window as the illustrated example. Control
settings that are individual to one of the processors in the group are so noted in the description of those controls.
Automatic Gain Control (AGC)
The AGC creates a more consistent volume level when talkers speak at different volume levels. It acts like a sound engi-
neer with his or her finger on a fader, increasing the gain of the input signal when the level is too low, and decreasing it
when the level is too high.
Function
Use this processor in situations where it is desirable to maintain a constant volume level, such as for podium and
lectern microphones where the talkers’ proximity to the microphone varies. The AGC compensates for quiet levels
by gradually raising the gain. If a talker then speaks loudly into the microphone, the AGC will gradually reduce the
gain. However, if an individual talker quickly changes the level of his or her voice by shouting, whispering, or get-
ting very close to the microphone, that brief peak or valley in the overall level will pass through the AGC
Block Name Description
AGC Automatic Gain Control
1
2
3
4
5
6
7
8
FIGURE 7-1: AGC Window