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Use the AGC/ALC radio buttons to select Off, ALC, or AGC. The default is Off. ALC is performed automatically;
there are no user-configurable settings for ALC.
NOTE: AGC occurs after gain and filter settings in the audio signal path.
The configuration controls for AGC are described in the following sections.
Maximum Gain Slider
Set the Target Level first, then set the Maximum Gain that you want the AGC to apply to the signal. Maximum
Gain is set using an RMS (Root Mean Square) level, which is the average magnitude of the audio signal over time.
Maximum Gain range is 0 to 18dB in 1dB steps. The default value is 6dB.
Target Level Slider
Target Level (RMS) sets dB level for AGC to maintain. Target Level range is from -30 to 20dB in 1dB steps. The
default target level is 0dB.
Active Gain Meter
The Active Gain Meter displays the gain adjustment being applied to the channel by AGC.
Response Time Slider
Response Time sets the amount of time (in milliseconds) over which the level is averaged before AGC is activated
or deactivated.
Threshold Slider
Threshold sets the dB level at which AGC engages. The Threshold is set using an RMS (Root Mean Square) level,
which is the average magnitude of the audio signal over time.
NOTE: Setting the Threshold above the background noise level will prevent AGC from amplifying
background noise.
For additional information, refer to the Table of Contents for these related topics:
Channel Tab Overview•
AEC (Acoustic Echo Cancellation)•
NC (Noise Cancellation)•
Mic Gating•
Filters•
Line Input Settings•
Mic Input Settings•