Arturia PolyBrute, Руководство пользователя

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•
Brute Factor
adds distortion by feeding the filter output back into itself. This can
be subtle or wild. Try with various VCO 1 mixer levels.
• VCF ENV Amt routes VCF 1 through VCF ENV. Lower the Cutoff to make headroom
for the envelope.
• Level controls the output level of VCF 1. Results are most obvious when the Series/
Para knob is 50-100% to the left.
The sound has a basic tone now, but it needs more of a shape. That's what envelopes do, so
we'll cover that next.
3.2.4. VCA ENV
PolyBrute has three envelopes. We'll use the VCA ENV to learn what envelopes do, and
describe the other two later.
The VCA (voltage-controlled amplifier) is the final output stage prior to the Effects. VCA ENV
is used to shape the amplitude of the VCA. It's a 4-stage envelope (Attack/Decay/Sustain/
Release, or ADSR). Here's what each stage does:
•
Attack
sets the time it takes the envelope to reach its full level.
• Decay determines how long it takes the envelope to reach the Sustain level.
• Sustain is the target level for the Decay. The envelope decays until it reaches this
level, unless the key is released before it gets there.
•
Release
determines how long it takes the envelope to fade out after the key is
released.
These steps show the function of each stage. If needed, initialize the sound as described
here [p.14] .
1. Adjust the VCA ENV Attack slider while playing the keyboard. Higher values mean
slower attack times. Use a fast attack for now.
2. Move the Decay fader up and down. The initialized sound won't change, because
the Sustain level is at maximum by default. The envelope can't decay because it
has nowhere to go.
3. Set the Sustain level to 1/4 of the way up, and try the Decay fader again. It
governs the amount of time it takes to settle from the Attack level to the Sustain
level.
4. With Decay and Sustain 1/4 of the way up, play some notes while moving the
Release fader. This controls how long it takes for the envelope to return to zero
after a note is released.
5. The Velo fader adjusts the way the envelope responds to note velocity. With
the fader all the way down the envelope has no dynamic range. When it is at
maximum, playing the keys with varying degrees of force results in notes that
are proportionately softer and louder.
18 Arturia - User Manual PolyBrute - Create a Patch