[sdiy] jitter in oscillators for music purposes

Colin f colin at colinfraser.com
Mon Jul 12 18:37:22 CEST 2004


> > 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




More information about the Synth-diy mailing list