Technical data

DOC-01-TELAS-CRG-4 ASTi ACE Studio Components Reference Guide Rev.M
108 Copyright © 2014 Advanced Simulation Technology inc.
6.4. Gate
Summary: The Gate component only allows a signal through if it is loud enough to
break the threshold.
Description: This component is similar to the Audio/Vox component in that it is
used to only let speech through (to a radio, etc.) if a person is actively speaking. In
this example, the threshold should be adjusted to be just below the quietest speech
that is allowed through. The Gate component reacts to peak levels in the signal,
unlike the Vox which looks at average levels. This makes the Gate more responsive,
especially to the first sounds as speech starts.
Audio Input
InSignal
Type Default Value
audio n/a
Description: The signal that will be filtered. This input is linked
into the component from somewhere else in the model.
Control Input
Depth
Type Default Value
float32 40.0
Description: The amount of gain reduction in dB that is applied
when the signal dips below the threshold.
Enable
Type Default Value
boolean True
Description: Controls whether any gain adjustment will occur.
Control Inputs
Hold
Type Default Value
float32 1000.0
Description: A delay in milliseconds before reducing gain on a
signal after it goes below the threshold. This allows the signal
through the Gate for the hold time, even though it is below the
threshold.
OutGain
Type Default Value
float32 1.0
Description: A gain applied after the Gate stage.
PTT
Type Default Value
boolean False
Description: A control used to open the Gate (let the signal
through), even if it is below the threshold.
Threshold
Type Default Value
float32 -45.0
Description: The level in dB below which a signal will be
attenuated in volume or not allowed through the Gate.
VoxMode
Type Default Value
boolean False
Description: If True, the Gate will act like the Vox component and
cause the audio stream to go inactive if it is below the threshold. If
False, signals below the threshold will be attenuated (according to
the depth setting) but will remain active.