The second part is know as the decay, th
is is the time it takes to reach the sustain (the final) level. If this
level of sustain is for instance 50, the decay goes down to 50% and stays there.
Finally when you release the key, the envelope goes to 0%, during the period that you just set.
An extr
a feature inside Predator is Fade. Fade adds a second part to the sustain level, when it is positive the
sustain level goes up to 100% over a set period, if it is negative then the sustain level goes down to 0% over
a set period. This is a handy feature i
f you want the Cutoff frequency of the filter to rise whilst holding the
keys. Listen to preset "Syntho Brass" in the first bank.
To hear the full effect of the Filter Envelope you have to open the Env amount, which you can find in the filter
section nex
t to the Cutoff Frequency.
The amount can be positive or negative.
Attack
An envelope always rises from 0 to 100% and back to 0% when the key is released.
Attack controls how fast it rises to 100%. So if you open the Attack control knob, it takes longer
to go from 0
to 100%.
With Attack closed, the envelope starts at 100%.
Decay
After the attack stage, with the envelope at 100%, the decay stage is reached.
Decay reduces the envelope level to the sustain level over a set time. So if you use a long deca
y, it takes
longer to reach the sustain level.
If the sustain level is 100% the Decay has nothing to fall to and so the sustain stage is reached immediately
after the attack.
Sustain
This is level of the sustain stage. After the attack & decay stage, the
envelope goes into the sustain stage
and remains here for as long as you have a key pressed down. The sustain level is the level of this sustain
stage. Sustain level in the Filter envelope means the level of where the
Cutoff frequency
parameter stays as
l
ong as you hold the key(s).
Sustain fade
If the fade is set to off, the sustain remains at the sustain level i.e. it is a classic sustain.
If you open the fade amount in a positive direction the sustain changes into a second attack.
So after the Decay rea
ches the Sustain level it starts rising to 100% again and the time it takes to reach
100% is set by the Fade time.
If you open the fade amount in a negative direction the sustain changes into a second decay.
So after the Decay reaches the Sustain level it starts falling to 0% again and the time it takes to reach 0% is
set by the Fade time.
Release
After you have released a key (note), the release stage starts. The envelope then decays from the sustain
level to 0%, the time it takes is set with the release
knob.
Filter LFO
An LFO (Low Frequency Oscillator) is an oscillator at a very low pitch/frequency.
In Predator the LFO can have a frequency between 0.03Hz and 27.50Hz.
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