ClearOne comm PSR1212 - Manual (Page 43)

37 System Configuration ~ Inputs and Outputs
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Ambient Level if you want to specify a fixed reference point rather than one that
adjusts for background noise. The range is from -80 to 0dB. Default is Off.
Decay Rate
Decay Rate determines how fast a channel gates off after the hold time expires.
Default is Medium.
PA Adapt and AEC Reference
When using the PA Adaptive mode, the output that carries this information, i.e. the
reference output, must be defined. Select the reference output from the PA Adapt
and AEC Reference list. Any one of the 12 outputs, four expansion bus references, or
four virtual references can be selected.
If you select an expansion bus reference, the Define PA Adapt/AEC
Expansion Bus Ref window opens so you can identify which expansion bus output you
want to use as the PA reference. You can also open this window from the toolbar.
Figure 3.29. PSR1212 automixing gate functions
Figure 3.30. PA Adapt/AEC
window and toolbar button