[sdiy] jitter in oscillators for music purposes

[Czech Martin]

true, therefore it is not phase modulation allone.
It's getting more complicated.

Time to set up a mathematical model and let the machine
do it's job.
But the creation of saws via discrete *integration* 
will create some alias as well....

I wonder if oversampling will help a lot...

m.c.

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Colin f
> Sent: Montag, 12. Juli 2004 18:37
> To: synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] jitter in oscillators for music purposes
> 
> 
> 
> > > Now, as Magnus said, the voltage noise on the comparator input
> > > certainly leads to frequency modulation. Even if it is white,
> > > the laws of small frequency modulation will shape the spectrum
> > > accordingly. So we only need to compute the total noise
> > > voltage at this point, following traditional methods.
> > 
> > I prefer to use phase modulation, since that is also what 
> > really happends.
> > This is also supperiour in most analysis forms. 
> 
> ...and presumably amplitude modulation too, of a fixed amount per
> oscillator cycle. As with the frequency/phase modulation the amount is
> only altered at the instant of reset when the noise at the comparator
> input is 'sampled'.
> 
> Colin f
> 
> 
>