Phase + Frequency Modulation

[Wavewizard 23]

I'd like to have an oscillator with both Phase and FM (with Lin and Trk modes) inputs but it doesn't exist as a preconfigured module. Does anybody know how to create such an oscillator?

[blue hell]

Basically Phase and (linear) Frequency modulation are the same thing ... but to get it exactly the same you need to apply some filtering to the modulation signal ... now I always forget how to do that ... sooo let's think .... phase modulation with a constant would not do a thing it's change of pahse which does something .. but change of phase basically is frequency ... so to do FM you'd want to to modulate a PM input with a derivative ... I think I got that right ...

for details see : https://moinsound.wordpress.com/2011/03/04/frequency-modulation-or-phase-modulation-synthesizer-technologies/

To make a derivative is easy ... it is the change signal .. so you subtract a one sample delayed signal from the signal itself .. to delay one sample just use any module that passes the signal unchanged .. like a mixer set to gain 1.

Sorry for this late and confusing answer ... but something had to be said here

[blue hell]

Anaother link : http://dixon.hh.se/urbi/WCS/WCS2/Lecture5_2.pdf

[Wavewizard 23]

Thank you, I'll check your links!!

[Grumble]

A different approach:
In my diy synth I'm building I use frequency generators, not oscillators.
My favorite is the Analog Devices AD9833 wich has registers for phase modulation.
It is a D(irect) D(igital) S(ynthesis) chip very usefull for LFO VLFO (Very Low Frequency Oscillator as low as 133 sec. when clocked at 1.5 MHz) and audio frequencies generator (triangle, sine and square wave).
You will need a micro processor to have this thing running though...

edit: I'm sorry, this has nothing to do with the Clavia Nord Modular

[Tim Kleinert]

I had a go at the subject.

http://electro-music.com/forum/post-417745.html