By the way, I was wondering and thinking if this was a particularity of the "0Hz carrier FM", that is: a FM patch with no carrier frequency. But I tried other regular FM patches with a carrier signal and could see that it didn't keep static as well.
On the other hand, the same patch implemented as Phase Modulation (PM) maintains a static waveform in Pd. In my last example, the patch I had as "waveshaping" could be thought of as a "0hz PM" patch. Now, I tested the PM stability with the [phasor~] + [cos~] architecture and also with [cycle~]. The FM instability happened with both [osc~] and [cycle~]. In Max, a FM patch with [cycle~] is stable. In short, there's something fishy with FM in Pd... cheers 2015-11-21 13:25 GMT-02:00 Alexandre Torres Porres <por...@gmail.com>: > > Can you elaborate? > > Not easily I'm afraid, so I'll try to keep it simple: it's a > demonstration on the relationship between FM and waveshaping, compare now > both patches in my new example. The waveshaping does not change through > time. > > But let me attempt to reason why it should keep static - it's like any > other FM patch, once you have set the parameters, the waveform must be > static and not change in time. My tests with supercollider and Max had a > good result (waveform kept static). I also tried in Pd with cycle~ and in > the newest vanilla. > > cheers > > 2015-11-21 11:26 GMT-02:00 Roman Haefeli <reduz...@gmail.com>: > >> On Sat, 2015-11-21 at 02:59 -0200, Alexandre Torres Porres wrote: >> > howdy, attached there's a patch where I was experimenting with FM >> > >> > >> > the waveform shouldn't change with time, but it does. Give it a while >> > though, 30 seconds is enough to hear a change in tone quality, then >> > resseting the oscillator phase brings it back to where it was >> > >> > >> > don't know why it does come out of phase, an equivalent patch in SC >> > and Max does not get out of phase... >> >> I hear and see what you mean. Interesting question. Frankly, I don't >> quite understand why it is expected to stay in phase. Can you elaborate? >> >> Roman >> >> >> _______________________________________________ >> Pd-list@lists.iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >> >
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