Drawmer DS201 Dual Noise Gate - Manual (Page 6)

CONTROL DESCRIPTION
L.F. 25Hz - 4kHz
The Low Frequency filter works by severely attenuating frequencies
below the cut-off frequency selected.
H.F. 250Hz - 35kHz,
The High Frequency filter attenuates frequencies above the selected
cut-off value.
In other words, when both filters are set, it is the range between the
two settings that is allowed to pass.
Threshold -50dBFs - infinate
Sets the level at which the gate opens.
Attack 10uS - 1 Second
This control determines how quickly the gate opens. The fastest
Attack time ensures that the gate does not clip the leading edge of
extremely fast transients.
Note: See section on using Attack under 'OPERATION'
Hold 2mS - 2 Second
Determines the amount of time the gate is held open after the signal
falls below the Threshold.
Decay 2mS - 4 Second
Determines the rate at which the gate closes, once the signal has
fallen below the Threshold and the Hold time has expired.
Range 0dB - 90dB
Sets the amount of attenuation applied to the signal when the gate is
closed. This enables the gate to remove unwanted signals entirely, or
simply to attenuate signals which are too loud.
Note: This control is active on both channels, even in stereo linked
operation
Ext/Int In the Int position, this switch causes the gate to respond to the
dynamics of the signal being processed.
In the Ext position, an external audio signal fed to the key input is
used to control the gate, making it possible to gate one sound using
another, independent signal.
Gate/Duck Switches from normal Gating to Ducking, for applications such as
voice-over or the removal of 'clicks' and 'pops'.
Note: See later sections on Ducking under 'OPERATION' and
'APPLICATIONS.'
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