> The SEM has a continuously variable control to morph from LP to BP to
> HP, not sure if you can get to notch too.
If you are referring to the original SEM1A's, this is not the case. The
filter type pot will go continuously from LP to NOTCH to HP. "Below" LP,
BP is switched in by using the same pot. Hence, one cannot morph
continuously to BP. I'm curious to see what Paul comes up with in regards
to this part of the filter, especially under voltage control.
There are 2 other pots for frequency and resonance. Modulation is either
from envelope 2, the lfo, or an external source (with an appropriate
external connection).
Jeff