9

EVOC 20 Filterbank Formant Filter Parameters
The parameters in this section provide precise level and frequency control of the filters.
Bands value field
Lowest button
Formant Shift knob
High and Low Frequency
parameters
Frequency band faders
Boost A knob
Fade AB slider
Boost B knob
Highest button
Slope pop-up menu
Resonance knob
• High and Low Frequency parameters: Determine the lowest and highest frequencies
allowed to pass by the filter banks. Frequencies that fall outside these boundaries will
be cut.
• The length of the horizontal blue bar at the top represents the frequency range. You
can move the entire frequency range by dragging the blue bar. The silver handles
on either end of the blue bar set the Low Frequency and High Frequency values,
respectively.
• You can also use the numeric fields to adjust the frequency values separately.
• Frequency band faders: Set the level of each frequency band in Filter Bank A (upper
blue faders) or Filter Bank B (lower green faders). You can quickly create complex level
curves by dragging horizontally (“drawing”) across either row of faders.
• Formant Shift knob: Moves all bands in both filter banks up or down the frequency
spectrum.
Note: The use of Formant Shift can result in the generation of unusual resonant
frequencies—when high Resonance settings are used.
• Bands value field: Sets the number of frequency bands—up to 20—in each filter bank.
• Lowest button: Click to determine whether the lowest filter band acts as bandpass or
highpass filter. In the Bandpass setting, the frequencies below the lowest bands and
above the highest bands are ignored. In the Highpass setting, all frequencies below
the lowest bands are filtered.
104 Chapter 6 Filter Effects