[sdiy] oscillator jitter / phase noise

[Czech Martin]

> > In some old postings it was said that "old" vco designs
> > "could" sound better because there is some random process
> > leading to phase noise/jitter.
> 
> I think it could be an important part of the entire picture.
> But other factors have also be taken into account, like
> (since were at it at the moment) the finite reset time, parasitic 
> locking and so on.

I thougt power supply noise and comparator noise would cover this.

> I have often heared from people who prefer the sonic 
> properties of "less 
> precise" circuitry over "precision designed" circuitry. In 
> the end drift 
> is nothing else than the low frequency corner of phase noise. 
> And can be 
> fought against by lower noise opamps, better comparators and so on.
> 

Yes, the question is what this drift really is.
It would be nice to avoid the long term deviations (because they
lead to awfull fats beating), but to keep the faster phasing.

m.c.