User Manual

WAVELAB
33 – 788 Plug-in Processor Reference
Trigger Frequency Range
AutoGate has a feature that allows the gate to be triggered only by sig-
nals within a specified frequency range. This is a most useful feature be-
cause it lets you filter out parts of the signal that might otherwise trigger
the gate in places you don’t want it to, thus allowing more control over the
gate function. The Trigger Frequency Range function is controlled using
the control in the upper part of the AutoGate panel, and the slider located
below it. The basic operation of the Trigger Frequency Range function is
as follows:
1. While playing back audio, drag the slider to the “Listen” position.
You will now monitor the audio signal, and the gate will be bypassed.
2. While listening, drag the two handles in the Trigger Frequency window to
set the frequency range you wish to use to trigger the gate.
You will hear the audio being filtered as you move the handles.
• Dragging the left handle to the right will progressively cut frequencies starting
from the low end of the frequency spectrum.
• Dragging the right handle to the left will progressively cut frequencies starting
from the high end of the frequency spectrum.
3. After setting the frequency range, drag the slider to the “On” position.
AutoGate will now use the selected frequency range as the trigger input.
4. To disable the Trigger Frequency Range function, drag the slider to “Off”.
AutoGate will now use the unfiltered audio signal as the trigger input.
Calibrate Function
This function, activated by using the Calibrate button located below the
Threshold knob, is used to automatically set the threshold level. It is espe-
cially useful for material with consistent inherent background noise in the
audio material, like tape hiss for example. This may be masked by the au-
dio content for most of the time, but becomes noticeable during silent
passages. Use as follows:
1. Find a part of the audio material, preferably not too short, where only the
background noise is heard.
If you can find only a short section with background noise, try looping it.
2. Play it back, and click on the Calibrate button.
The button will blink for a few seconds, and then automatically set the threshold so that the
noise will be silenced (gated) during passages where there is no other signal present.