Casio CZ/ VZ/ FZ - Pro Series

Hello,

the FM-synthesis is so well explained.The PD synthesis not at all.
The question is,what happens in PD ?
For FM it is all well known.But PD or the iPD is still a mystery.

A lot voices say,that PD is similiar to FM.That´s not true.
PD and FM belong to the same family,they are both waveshapingsytems.
But Waveshaping is really a big field,so that both synthesissystems
can not claim it.
The actionfield of operators in FM and PD are different.
FM can be called as an upperfrequencyversion of Pitchmodulation by LFO.
Or the analog crossmodulation.
This means,that FM changes always the frequency of modulation.
That´s why there can be a Ratio Parameter.
In PD it is not like that.The explanation in the poor manual of Casio
about PD/iPD,as a guitarplayer with several OD/Dist stomboxes in row is
much better.
The PD does not FM the next module,it distorts it.(Not like a
Fuzzface),that´s why tuning the second module makes no sense.
For FM such Ratio makes big sense.For PD not !
PD has only one FM,the low Vibrato tool.
PD works more as a guitar overdrive as a FM synth.
FM stretches and squiches the frequency by modulation.
In PD this happens only for the half phase.Difficult to explain.

The Casio PD synthesis is more guitaristiclike as the FM.

But until now I didn´t found a good resource on the Web,explaining
PD in Detail.
The only thing I can say is,that PD and FM are different and not
similiar.

Marty