Odp: [sdiy] discrete VCOs

[Roman]

I got an idea, maybe an overkil, but still...

since early VCOs are so fat/warm, but suffer from stability errors, why not make
2 VCOs. One discrete, old crappy design with no tempco even, that sounds
warm - this will be the output. Second one - solid as a rock, 5ppm max, but
very boring and definitely "cold". Both are controlled from the same CV.
Now the fun part - compare frequencies of them, and in case of any error,
adjust discrete VCO's CV to tune it up. A sort of FLL. It will track only
on slow changing notes, and who cares about CV tracking in fast modulation
anyway.
What do you think? Am I crazy?

and yes, I'll make that Axxe VCO to see how it sounds...
someday next year ;)

BTW, anyone brave enough to define border between WARM and FAT?

Roman

----- Original Message -----
From: Tony Clark <clark at andrews.edu>
To: Synth-DIY <synth-diy at dropmix.xs4all.nl>
Sent: Monday, September 30, 2002 8:36 PM
Subject: Re: Odp: [sdiy] discrete VCOs


> > Hi, from the other side of the globe.
> > Can a raw sawtooth sound fat comparing to others? What is so special about
it?
> > Can someone point me to some WAV samples of it? I found a schematic
somewhere,
> > but I wouldn't like to bother breadboarding it just of curiousity.
>
>    IMHO, a _clean_ sawtooth sounds "buzzy".  Somehow I doubt that the
> early discrete VCO's had a "clean" anything, and probably distorted the
> waveforms quite a bit, hence "fat"-ness.
>
>    Tony
>
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