15
Voltage-Controlled Filter
Adjustable parameters include the 24-db low-pass filter, “ARP” and
“MOOG” modes, cutoff, and resonance. In addition, you can select
three of six available modulation sources.
VCF Frequency
The cutoff frequency of the low-pass filter is the frequency above
which the spectrum is attenuated and overtones are de-emphasi-
zed. This is where you manually change the cutoff frequency.
VCF Resonance
Resonance results from feeding the filter output back to the filter
input: the frequencies near the cutoff frequency are thus emphasi-
zed. At full resonance the filter self-oscillates and creates a sine
wave at the set cutoff frequency.
VCF Modulation
The filter cutoff features three modulators that
can be adjusted according to intensity. There
are three faders to adjust the intensities and
three switches to select the sources. You can
use a selector switch directly below each fader
to choose the signal to be mixed. For the first
modulator you can select from Key Follow and
the Sample/Hold mixer, or alternatively the con-
nected foot slider (read the explanation below).
For the second modulator you can select from
the Sample/Hold function and the LFO’s sine
wave. For the third modulator you can select
either the AR or the ADSR envelope.
