Universal Audio UAD Plug-Ins ver.7.5 - Manual (Page 62)

UAD Powered Plug-Ins Manual - 62 - Chapter 4: API Vision Console Channel Strip
225L Ratio
Ratio defines the amount of gain reduction applied to signals above the
threshold. For example, a value of 2 (expressed as a 2:1 ratio) reduces the
signal level above the threshold by half, with an input signal level of 20 dB be-
ing reduced to 10 dB.
A value of 1 yields no gain reduction. When the control is at maximum ( ∞),
the ratio is effectively infinity to one, yielding the limiting effect. The available
range is 1:1 to infinity. The default value is 4:1.
225L Attack
This three-position switch defines the attack time of the compressor.
Available values are Fast (2 milliseconds), Medium (18 milliseconds),
and Slow (75 milliseconds). The default value is Medium.
225L Release
Release sets the amount of time it takes for processing to cease once the input
signal drops below the threshold level. The available control range is 50 mil-
liseconds to 3 seconds.
Note: Actual release times are program dependent.
Slower release times can smooth the transition that occurs when the signal
dips below the threshold, which is especially useful for material with frequent
peaks. However, if the release is too long, compression for sections of audio
with loud signals may extend to sections of audio with lower signals.
Fast release times are typically only suitable for certain types of percussion
and other instruments with very fast decays. Using fast settings on other
sources may produce undesirable results.
225L Knee
The knee (onset) characteristic of the compressor/limiter can be set
to Soft (SFT) or Hard (HRD) with this two-position switch. The default
value is Hard.
Soft provides a more subtle compression resulting in a very natural, less com-
pressed sound. Hard results in a more typical, sharp knee type compression
that has a more severe limiting effect.