LinPlug CrX4 - Manual (Page 46)

somewhat a bit similar to applying a compressor. The range is again 0
millisecond to 10 seconds.
Decay
The Decay dial setting determines the time it takes from the Attack peak to
the Sustain value of the envelope. Range: 1 milliseconds to 10 seconds.
Sustain
The Sustain dial setting determines value at which the Decay phase ends,
that can be something in the range 0 to 100%. If set to 100% it means that
the envelope wont fall from its maximum value, thus the decay is effectively
not taking place. A value of 0% means that the envelope is at minimum
value at the end of the Decay phase.
Fade
If the ADSFR envelope is used, the Fade determines the rate at which the
envelope moves from the Sustain level to either 0 (for negative Fade
values) or its maximum value (for positive Fade values). A Fade setting of 0
means that the envelope remains at the Sustain level until the key is
released. The more you turn the dial towards + or -, the faster it fades
towards the respective destination. The fade time is in the range 16
milliseconds to 10 seconds.
Release
The Release dial is used to set the time it takes the envelope to move from
the current level to 0 after the key is released (the Note ends). Range: 1
milliseconds to 10 seconds.
Phase Shape
Below each dial which controls a Time (that is Attack, Decay, Fade and
Release) there is a Shape control. It determines how the respective phase
is working. If it is a straight line, then the phase is working in a Linear
manner; changing it results in a either logarithmic or reverse logarithmic
shape. This has quite some effect, to try it we recommend you to use a
sound with a not too long amplitude release and play with the shape of the
release phase while listening to the results.
CrX4 User Manual 46