7

Chapter 6 Filter 75
Note: Boost is also quite handy to adjust the levels of both filter banks to each other, so
that using Fade A/B (see below) leads only to a sound color change, but not to a level
change.
Fade AB Control
The Fade AB crossfades between the A and B filter bank. At its extreme top or bottom
position, you will only hear one of the filter banks.
Formant Shift
Moves the position of all bands in both filter banks up and down the frequency range.
Note: You can jump directly to the values −0.5, −1, 0, +0.5 and +1.0 by clicking on their
numbers.
Resonance
Resonance is responsible for the basic sonic character of both filter banks: low settings
give it a soft character, high settings will lead to a more snarling, sharp character.
Increasing the value for Resonance emphasizes the middle frequency of each frequency
band.
Modulation Parameters
The Modulation (LFO) area controls the Formant Shift and Fade A/B parameters of the
EVOC 20 FB. It allows synchronous/non-synchronous modulation in bar, beat (triplet) or
free values.
• LFO Shift, on the left-hand side, controls Formant Shift modulation of the filter bands.
• LFO Fade controls the Fade AB parameter.