jure zitnik wrote:
> i don't know about the trident but on polysix you have 2 pots for
> filter tuning (you're actutally tuning cutoff, not resonance):
Yes, true, as the SSM2044 will produce a sine wave at its cutoff frequency.
> one for VCF offset
> one for VCF scale
I can't match those names with any hearing expierence from my tuning. ;-)
There are three pots on the Trident Mk2, one seems to control cuttoff
freq (is this what you call scale?) and the other one amount of
resounance. The third one I don't know...
> however, expect that the tracking will be way worse than VCO's
> tracking. maybe 3 usable octaves.
Hm the VCO tuning works great. I tuned it according to the document from
the files section of this Yahoo group and it's reasonably stable.
(I'm using a simple KORG guitar tuner for all of this.)
But back on topic: It seems to me that there should be a general "tuning
knob" for the VCF. The voices are alright now, they sound all the same
and (in my ears) as they should.
It's just that the high and low octaves of VCF resonance don't really
match the tuning. (The VCO is alright.)
Isn't there a similar tuning mechanism as for the VCO?
I'm not so keen on guessing by twiddling with trimpots. I don't like to
mess things up.
NIels