Access VIRUS|POWERCORE User's Reference Manual page 55

> ENV AMT
This determines to what degree filter 2 cutoff is affected by the filter envelope.
> KEY FOLLOW
This determines to what extent the filter 2 cutoff is affected by MIDI note number. Positive
values will cause the cutoff frequency to increase as you play up the keyboard, negative val-
ues will cause it to increase as you play down the keyboard.
> RESO VEL
This determines to what extent the resonance of filter 2 is affected by MIDI velocity. Positive
values mean as you play harder, the resonance increases in intensity. Negative values mean
that as you play harder, the resonance decreases in intensity.
> ENV VEL
This determines to what extent Filter 2 Env Amt is affected by MIDI velocity. Positive values
result in velocities of less than 127 applying a negative offset to the current value of Filter 2
Env Amt. And if you understand that, then you're doing very well indeed!
I think a practical example is in order:
Set Env Vel to +63, and Filter 2 Env Amt to 127. At this setting, playing as gently as possible
will result in the filter envelope having no effect on the cutoff frequency of filter 2. As you play
harder, the filter envelope has an increasingly noticeable effect until, at maximum velocity, the
effect is equivalent to Filter 2 Env Amt = 127 again.
If EnvVel is set to –64, and Filter 2 Env Amt is set to 127, then playing as gently as possible
will result in the filter envelope having maximum effect on the cutoff frequency of filter 2. As
you play harder, the filter envelope has less and less effect until, at minimum velocity, the
effect is equivalent to Filter 2 Env Amt = 0.
Positive values are the most common application of this parameter, as it simulates the way in
which the tone of an acoustic instrument becomes brighter the louder it is played. Many
synth sounds benefit from this effect as well.
VIRUS POWERCORE MANUAL
THE FILTER/ENV PAGE
55