BassStation Filter: What is it?

[metamatic at webtv.net]

cyborg_0 at iquest.net wrote:

>Anyone know what kind of filter is
>crammed in there? From what I
>remember, it was some sort of state
>variable filter, but I am not all that sure.
 >Perhaps someone has some schematics?

 I have the keyboard version. The VCF has two modes, both lowpass. The 2
pole mode is meant to suggest a TB-303 filter, somewhat unconvincingly,
IMO. The 4 pole mode, however, does a wonderful job of emulating a Moog
VCF. I think it sounds quite a bit like my ancient Source, and along
with the bonus of factory MIDI, I don't have to worry about damaging a
rare membrane switch panel.

 I'd love to see schematics as well, if only to see how the different
cutoff slopes are achieved.

Richard Hess

metamatic at webtv.net