Simple but important Pre-Resonace on SSM and Envelope Slope Questions

[|||| Philip ||||]

Hi all,

I was just trying to emulate my DK-600's 2044 SSM filter sound on my Waldorf
MicrowaveII. It comes close however the Self resonance on the MWII hits
very hard and fast over a range of about 1/20th knob sweep. It goes from
almost nothing to 100%. On the DK-600, this pre-selfresonance range is about
1/4 of the sweep and is simply the best sounding range to be in. In this
area the filters starts to go high pass and hints of self resonace cause the
sound to sparkle.

Can anyone explain exactly what is happening to the frequency spectrum as
self resonance is approached ? Can you reference this to filter circuit
behaviour if possible?


Also, the MWII has fast envelopes but they have linear slopes. I prefer the
slopes of other synths that I guess are log/exp. Can anyone explain why
these slopes sound better. Is there an advantage of one over the other?

Thanks
Philip