9.5. The Amp Mod button
As stated above the keyboard and the sequencer generate gates that control the volume of
the internal VCA (Voltage Controlled Amplifier) directly. It's a rather crude effect. Finger on
keyboard> sound on, finger off keyboard> sound off. When you enable the Amp|Mod button
(it's lit) you activate the Envelope generator, which will then use these gates to create much
more pronounced envelopes. The output of the Envelope generator (whether lit or unlit) is
sent directly to the filter to control its cutoff frequency. You set the amont of this control with
the Filter Amt knob. In addition, its output is available in the Matrix to control other modules
of the MicroFreak.
Note:
There's a setting in Utility that enables you to define whether or not the envelope will
retrigger when it receives a trigger from the keyboard, the Arpeggiator or the Sequencer.
Select Utility>Preset>Envelope reset.
9.6. The Cycling Envelope Generator
The Cycling Envelope Generator is a great tool for generating complex modulation signals.
Unlike a standard envelope that cycles through its stages only once, the cycling envelope
can retrigger itself after the last stage has finished. The Cycling Envelope then becomes a
complex LFO capable of creating wave shapes that cannot be generated with a standard
LFO.
Another unique feature of this Envelope generator is that you can change the shape of the
Rise and Fall stages and thus create a multitude of different Envelope shapes. Since the rise/
fall and hold levels can be modulated, the envelope shape can change in real time. More
about this in the next paragraph.
9.6.1. The stages of the Cycling Envelope
The Cycling Envelope has three stages:
• The Rise stage controls the time that the envelope will take to reach its maximum
volume once you have pressed a key on the keyboard (or trigger the envelope
using the Arp/Seq).
• In the Fall/Shape stage, you set the time that the envelope will take to diminish
to zero.
• The Hold/Sustain stage is part of the Fall/Shape stage, it sets the level of the hold
stage.
The Cycling Envelope Generator
Arturia - User Manual MicroFreak - The Envelope Generator
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