Expander Hard Knee And Soft Knee - SABINE Power-Q Operating Information Manual

"NGATE" allows an independent threshold (in addition to the threshold setting for expansion) to be
set for the onset of a noise gate, affording simultaneous operation of both gating and expansion.
"THRESH" and "RATIO" values will differ for the gate and the expander; the settings of all other
parameters will be common to both.
"ATTACK" sets the length of time the program output level takes to return to unity gain when the
input level threshold is crossed. It is adjustable from 1 to 99 milliseconds, with 1 millisecond
resolution.
"RELEASE" sets the speed of the expansion onset and is adjustable from 50 milliseconds to 5
seconds.
The expander/gate functions are separately adjustable for channels A and B. When expansion or
gating is engaged (i.e., when the threshold is crossed for a low KNEE value or above the threshold
for softer KNEE settings), the red LED ("GATE") on the POWER-Q front panel will illuminate.