8

Table Of Contents
Chapter 6 Filter 73
Modulation Section
The parameters in this section control the LFOs that modulate the Formant Shift and
Fade A/B parameters in the Formant Filter section, respectively. The LFO Shift
parameters on the left modulate the Formant Shift parameter of the filter bands, and
the LFO Fade parameters on the right modulate the Fade AB parameter.
 LFO Shift Intensity slider: Sets the amount by which the LFO modulates the Formant
Shift parameter.
 LFO Shift Rate knob: Sets the speed of the modulation for Formant Shift. Values to the
left of center are synchronized to the tempo in bars and other musical values, while
values to the right of center are free values in Hertz.
 Waveform buttons: Select the waveforms used by the LFO Shift and LFO Fade LFOs
respectively. From top to bottom, the available waveforms are: triangle, falling
sawtooth, rising sawtooth, square up and down around zero (bipolar), square up
from zero (unipolar), sample and hold (a random stepped waveform), and smoothed
sample and hold.
 LFO Fade Intensity slider: Sets the amount by which the LFO modulates the Fade AB
parameter.
 LFO Fade Rate knob: Sets the speed of the modulation for Fade AB. Values to the left
of center are synchronized to the tempo in bars and other musical values, while
values to the right of center are free values in Hertz.
Tip: The Formant Shift and Fade LFO modulations are the keys to the most
extraordinary sounds of the EVOC 20 Filterbank: Make sure to set up either completely
different or complementary filter curves in both filter banks. You can use rhythmic
material, such as a drum loop, as an input signal, and set up tempo-synchronized
modulations with different Rates for each LFO. You can then try a tempo-synchronized
Tape Delay after the EVOC 20 Filterbank, to produce unique rhythms.