[sdiy] all analog FM synthesis?

[karl dalen]

 --- Theo <t.hogers at home.nl> skrev: 

I tried it, it stops!
I seams that most VCF designs dont go trough zero!
But i have a feeling that a two pole state varibale can 
be made to phase reverse, because i have a two pole state
variable who oscillates in sinus! And its very gentle at 
phase reverse point,ie it starts oscillate from DC state
anywhere in the phase circle!

Reg
KD


> Duno maybe not at all, think the filters would stop self oscillate way above
> 0 hz?
> Theo
> 
> ----- Original Message -----
> From: JH. <jhaible at debitel.net>
> To: Theo <t.hogers at home.nl>; Synth-Diy <synth-diy at dropmix.xs4all.nl>
> Sent: Tuesday, March 01, 2005 1:39 PM
> Subject: Re: [sdiy] all analog FM synthesis?
> 
> 
> >
> > > Instead of VCO he is using self oscillating moog ladder filters.
> >
> > How do you modulate an oscillating filter thru zero ?
> >
> > (I'm asking because many classic "FM" sounds use a sub-audio
> > carrier that is modulated by audio rate modulator(s) ...)
> >
> > JH.
> 
>