Noise Gate - Extron electronics DMP 64 User Manual

Noise Gate

The noise gate allows an input signal to pass only when it exceeds a specified threshold
level. There is no processing of the signal above the threshold. Above the threshold level,
the signal passes, below the threshold the signal is attenuated at the rate set by the ratio
adjustment. The typical setting of the noise gate threshold is just above any noise level
in the environment or source equipment. That allows signals that are above the noise to
pass, and attenuates the noise when there is no signal.
Threshold — is the input signal level below
which gating begins (subject to attack time)
and above which gating stops (subject to
hold and release time).
Threshold level can be adjusted from -80.0 to
0.0 dB in 0.1 dB increments.
Default is -65.0 dB.
Max Attenuation — the maximum
attenuation of the signal when it drops below
the threshold.
Maximum attenuation can be adjusted from
0.0 to 80.0 dB in 0.1 dB increments.
Default is 25.0 dB.
Ratio — is the input signal level reduction
when gating is engaged.
Ratio can be adjusted from 1.0 to 100.0 in
0.1 increments.
Default is 20.0:1.
Attack Time — adjusts the time delay for
gating to engage after the input signal level
drops below the threshold level.
Attack time can be adjusted from 0.0 to
200.0 ms in 0.1 ms increments.
Default is 1.0 ms.
Hold Time — adjusts how long gating continues after the input signal drops below the
threshold and before release time begins.
Hold time can be adjusted from 0.0 to 500.0 ms in 0.1 ms increments.
Default is 300.0 ms.
Release Time — adjusts the time it takes to return the signal to normal (unprocessed)
levels after the signal is no longer below the Threshold level setting. Release time begins
only after hold time is reached.
Release time can be adjusted from 10 to 1000.0 ms in 0.1 ms increments.
Default is 1000.0 ms.
DMP 64 • Operation 33