PreSonus AudioBox 1818VSL - Manual (Page 34)

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PreSonus AudioBox ™ 1818VSL
Ov
er
view
Hook
up
Connec
ting
to a
Comput
er
Tut
orials
Technical
Informa
tion
Troubleshooting
and W
arr
an
ty
4 Software: Virtual StudioLive, AB1818VSL Remote, & Studio One Artist
Sof
tw
ar
e: V
irtual
StudioLiv
e
AB1818VSL Remot
e,
and S
tudio O
ne Ar
tist
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Compressor Ratio Sets the Compression Ratio for the Selected Channel or Bus.
Compression Ratio sets the compression slope, which is a function of the
output level versus the input level. For example, if you have the ratio set
to 2:1, then for every 2 dB of level increase above the threshold, the
compressor’s output will only increase 1 dB. The ratio can be set from 1:1
to 14:1.
Compressor Attack Sets the Compressor Attack for the Selected Channel or Bus.
Compressor Attack sets the speed at which the compressor acts on the
input signal. A slow attack time (fully clockwise) allows the beginning
component of a signal (commonly referred to as the initial transient) to
pass through, uncompressed, whereas a fast attack time (fully
counterclockwise) triggers compression immediately when a signal
exceeds the threshold. You can set the attack from 0.2 to 150 milliseconds.
Compressor Release Sets the Compression Release for the Selected Channel or Bus.
Compression Release sets the length of time the compressor takes to
return the gain reduction back to zero (no gain reduction) after crossing
below the compression threshold. Release can be set from 40 to 1,000
milliseconds.
Power User Tip: Very short release times can produce a choppy or “jittery” sound,
especially when compressing instruments that have a lot of low-frequency
components, such as bass guitar. Very long release times can result in an
overcompressed, or “squashed,” sound. All ranges of release can be useful, however,
and you should experiment to become familiar with different sonic possibilities.
Compressor Makeup Gain Sets the Amount of Makeup Gain for the Compressor on the Selected
Channel or Bus.
When compressing a signal, gain reduction usually results in an overall
attenuation of level. The gain control allows you to restore this loss in
level and readjust the volume to the precompression level. You can adjust
Makeup Gain from 0 dB (no gain adjustment) to +28 dB.
Limiter On/Off Turns the Limiter for the Selected Channel or Bus On or Off.
When the limiter is engaged, this button will illuminate. The threshold for
the limiter is set to 0 dBFS. The ratio is ∞:1.
The limiter is available for all input and output buses.
Low EQ On/Off Button Activates Control for the Low Band EQ for the Selected Channel or Bus.
This button activates control of the equalizer’s Low band for the selected
channel or bus. The button will illuminate to indicate control is active.
The Low EQ band is available for all input and output buses.
4.1 Virtual StudioLive