[sdiy] HPFs and ADSRs

[Antti Huovilainen]

On Tue, 25 May 2010, David G. Dixon wrote:

> I also learned how annoying it would be to have only one envelope for
> modulating both the VCF and the VCA, again from the MS-20.
> After I finish my preamp/envelope follower, I guess my next project will 
> have to be a couple of SVFs and a couple of ADSRs.

Be aware that MS-20 highpass filter is quite different from SVF. Without 
resonance, it's 1-pole highpass and increasing resonance shifts it 
somewhat towards 2-pole.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova