PRESONUS AudioBox 22VSL Owner's Manual page 28

4 Software: Virtual StudioLive and Studio One Artist
4.1 Virtual Studio Live
Compressor Threshold
Compressor Ratio
Compressor Attack
Compressor Release
Compressor Makeup Gain
Limiter On/O
24 24 24
Sets the Threshold of the Compressor for the Selected Channel or Bus.
When the signal's amplitude (level) exceeds the threshold setting, the
compressor engages. Turning the knob counterclockwise lowers the
threshold so that compression begins at a lower amplitude. The threshold
can be set from -56 to 0 dB.
Sets the Compression Ratio for the Selected Channel or Bus.
The 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.
Sets the Compressor Attack for the Selected Channel or Bus.
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.
Sets the Compression Release for the Selected Channel or Bus.
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 di erent sonic possibilities.
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 (if desired).
You can adjust Makeup Gain from 0 dB (no gain adjustment) to +28 dB.
Turns the Limiter for the Selected Channel or Bus On or O .
When the limiter is engaged, the 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.
PreSonus AudioBox 22/44VSL
™