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27
Envelopes
Modal 001 provides two separate classic 4-stage contour generators (i.e. envelopes), one for
the filter (VCF-EG), one for the amplifier (VCA-EG): the former modulates the filter cutoff
frequency, if a value different from zero is set for the filter EG parameter (see ‘Filter’ section -
previously in this same chapter); the latter modulates the amplifier volume, if a value different
from zero is set for its own Amount parameter.
On the 001 front panel, the same set of controls are shared between Envelope and Sequencer/
Animator/Arpeggiator functionalities (see chapter 5): to switch between the two modes, just
press the EG/Seq button.
Before you continue reading this section, please make sure that the LED is in ‘EG’ position.
Both the envelopes have the same 4 stages, plus 1 option:
1. Attack:
This parameter controls the time passing from the moment you press a key (i.e.
‘MIDI Note On’ message) until the sound reaches its maximum value
2. Decay:
This parameter controls the time passing for the sound to drop from its maximum
value to a sustain level (see later)
3. Sustain:
This parameter controls the level of the sustain phase of the sound (i.e. the
volume of the sound while keeping the key pressed). If there are no modulations active,
this volume keeps constant until you leave the key (then entering the ‘release’ phase)
4. Release:
This parameter controls the time passing from the moment you leave a key (i.e.
‘MIDI Note Off’ message) until the sound reaches silence
5. Shape:
This parameter varies the shape of certain stage of the envelope. You can choose
between ‘Linear’ mode (where all the stages have linear shape), or ‘Exponential’ mode
(where Decay and Release have exponential shapes, but the Attack stays linear). The
‘Exponential’ mode is also faster than the ‘Linear’: it gives the ability to create snappier
transients, thus it is the best mode for percussive sounds design. On the other hand,
‘Linear’ should be preferred when designing pad/ambient sounds.
This parameter is not on the front panel and is accessed using the screen controls.
The VCA-EG has one other different parameter available:
6. Amount:
This parameter controls the amount of contour generator applied to the VCA.
If this parameter is set to 0 you hear silence, while turning it up causes the volume to
increase.
Select
-
+
Tempo
Osc1
Note
Note
Wave/PW
Wave
Rate
PW
Detune
Sync
SubWav
DeRez
Key Mode
Mono
Poly
Stack
Glide
Oct -
Oct +
Depth
Source
Wave1
Slope
Drive
Osc1
Wave2
VCF
VCA
Osc2
Recall
Transpose
LFO-1
LFO-2
Velo
AftT
PW
Osc2
CutOff
Decay
Decay
EG
Seq
Sustain
Sustain
Slope
EG
Note
Amount
LFO-2
Velo
Reso
Attack
Attack
Release
Volume
Mode
Release
Sub1
LFO-1
LFO-2
Sub2
Drive
VCF
Mix
Osc2
Osc1
LFO
Modulation
Keyboard
VCF-EG
VCA-EG
Sequencer
Ani
Seq
Arp
