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VCF is a Low-Pass Filter that only allows lower frequencies to pass through to the output.
CUTOFF Slider
This sets the cutoff frequency of the low-pass filter. Frequency bands above the cutoff are filtered out while
those below are allowed to pass through, removing higher frequencies and giving the sound a mellower, subtle,
or rounded timbre.
RES Slider
This controls the resonance, which boosts the sound around the filter’s cutoff frequency. Higher resonance
provides more emphasis to the frequencies around the filter cutoff frequency, producing more electronic or
synthesizer textures. To an extent, it also deemphasizes some of the lower frequencies in the sound.
SLOPE Switch
This selects the steepness or slope of the low-pass filter. The -24dB setting eliminates more of the high
frequencies than does the -12dB setting, often leading to a brighter sound at higher settings.
LFO MOD Slider
Adjusts the depth by which LFO modulates the cutoff frequency.
ENV MOD Slider
Adjusts the depth by which ENV controls the cutoff frequency.
ENV-1/ENV-2 Switch
Selects which envelope (1 or 2) controls the cutoff frequency. If ENV-1 is selected then the ADSR (Attach, Decay,
Sustain, and Release) settings of ENV-1 will control the cutoff frequency. Likewise if ENV-2 is selected then the
ADSR settings of ENV-2 will control the cutoff frequency.
KEY FOLLOW Slider
This allows the cutoff frequency to be adjusted automatically depending on the notes you play. This is needed to
counteract some of the negative impacts that a filter can have on frequencies as you play up and down a
keyboard. For example with a low-pass filter, the sound becomes more muted and less precise as you play
higher notes. To counteract this, moving the KEY FOLLOW slider upward will cause the cutoff frequency to
increase as you play progressively higher notes.
VCA is a Voltage Controlled Amplifier that allows you to adjust the volume of the patch, as well as the
magnitude of the effect that the LFO has on the volume of the sound.
LEVEL Slider
This adjusts the volume of the patch.
LFO MOD Switch
Allows the for tremolo effects by having LFO modulate the VCA volume, depending on the level selected –
higher settings produce more pronounced tremolo effects.
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