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The filter is the main timbral shaping tool on the Softpop. You can use
it to take away specific frequencies and harmonics while accentuating
others. You can also animate that process and create the iconic filter
sweep. Softpop’s filter is also a unique sound source: it is optimized for
extended filter techniques such as overdriving, pinging, self-oscillation,
or filter FM.
The primary control of the filter is the CUTOFF fader that sets the
cutoff frequency. This frequency tells the filter to remove the frequency
spectrum either above (lowpass), around (bandpass), or below (highpass)
the CUTOFF.
Softpop’s filter has 3 modes of filtering selectable with the LP/BP/HP
switch.
It is a state variable filter with a 6dB/oct slope on the bandpass and
a 12dB/oct slope for the lowpass and highpass modes.
Filter
section
