Filters
A lowpass filter emulating a 4-pole transistor ladder.
When input is unplugged or go silent at very high resonance setting it can self-oscillate, if resonance is dialed too low again, it will stop and the procedure have to be repeated to get it going again.
The linearity knob is to adjust for how strong the input signal is. The stronger it is the more you want to increase the knob, which in turn makes the filter act more linear. It just adjust the voltage going into the filter, and opposite for the signal going out. Best I can recommend is to experiment and find out what sounds the best. The default value should work good with +-5V peak audio input.
It attenuate around 24dB/octave. The cutoff attenuation is in the 12dB range.
Might remove it soon, as haven't found a any use for it and don't feel like improving it.
Just a very simple high-pass filter.
