[sdiy] Voltage references in VCO

[elmacaco]

That sounds interesting,

It would be cool if you could use it to modulate osc tracking as well, for
authenticity ;)

But that's assuming it is the drift in the oscillators that is what is
pleasing.

I don't know what it is, but I find older oscillators much more interesting
straight tone wise then newer ones.   Moog, older Roland (system 100,
SH-09, -2,-5, & -7) pleasing in a similar way yet the rolands don't have
much drift in my experience.

There was something posted a while back about the noise in the PSU as well
as other factors.  How about a Osc with the PS voltage levels CV
controllable ?!  A little noise injection ; D  surely it would modulate more
than just the frequency!!

Again, any oscillator is useful, we can all get on with it with whatever we
have, but that's a nut that would be great to crack, as it stands it doesn't
seem very well understood at all.




----- Original Message -----
From: "Ian Fritz" <ijfritz at earthlink.net>
To: "elmacaco" <elmacaco at nyc.rr.com>; "Rob" <rob at emulatorarchive.com>;
"'Synth DIY List'" <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, April 13, 2006 9:14 PM
Subject: Re: [sdiy] Voltage references in VCO


> At 08:33 PM 4/13/06, elmacaco wrote:
> >Agreed,
> >
> >But how to introduce it in a way that reproduces what people hear in the
old
> >drifty moog oscillators?
>
> Buy an IC thermometer chip and feed the output into an FM input?  Heck,
> develop a whole new module -- a TCDS (temperature-controlled drift
> source).  Have the sensor on a cable so you can put it where the best
draft
> is. It could have variable offset and gain, maybe both lin and log
> outputs.  And so on.
>
>    :-)