PreSonus AudioBox 1818VSL - Manual (Page 77)

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Owner’s Manual
Ov
er
view
Hook
up
Connec
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Comput
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Tut
orials
Technical Informa
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Tr
oubleshooting and
W
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e: V
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StudioLiv
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AB1818VSL Remot
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Tutorials 5
Tut
orialsl
A Brief Tutorial on Dynamics Processing 5.2
Noise Gating. Noise gating is the process of removing unwanted sounds
from a signal by attenuating all signals below a set threshold. As described,
the gate works independently of the audio signal after being “triggered” by
the signal crossing the gate threshold. The gate will remain open as long as
the signal is above the threshold. How fast the gate opens to let the “good”
signal through is determined by the attack time. How long the gate stays open
after the signal has gone below the threshold is determined by the hold time.
How fast the gate closes is determined by the release. How much the gate
attenuates the unwanted signal while closed is determined by the range.
Noise gates were originally designed to help eliminate extraneous noise and
unwanted artifacts from a recording, such as hiss, rumble, or transients from other
instruments in the room. Since hiss and noise are not as loud as the instrument being
recorded, a properly set gate will only allow the intended sound to pass through;
the volume of everything else is lowered. Not only will this strip away unwanted
artifacts like hiss, it will add definition and clarity to the desired sound. This is a very
popular application for noise gates, especially with percussion instruments, as it
will add punch or “tighten” the percussive sound and make it more pronounced.
The following are the compression presets that were used in the PreSonus BlueMax.
We have included them as a jumping-off point for setting up compression in VSL.