Nice! if you later decide to use portamento or pitch modulation of the carrier osc, you can always replace the clip~ object with max~ and send the signal version of the carrier frequency to one side, and the modulation to the other. this will act identically as it will either send mod values higher than the carrier or the straight carrier.
I could be wrong, but I think the bob~ object has a clipping/saturating component that is more elegant and less likely to alias than a straight clip~. is this true? I think it can also accept startup messages to specify oversampling for better performance in this way. I think you could scale input to bob~ even to clip at the carrier frequency. But it would be nice to know if bob~ is actually good for this job before patching it up.
I am worried about the aliasing you will get with more complex waveforms than sine. I am interested in some methods like polyBLEP to smooth out discontinuities and wonder if they could be used downstream from an audio rate modulated oscillator and still function correctly. I've avoided this in my own oscillators by doing silly and expensive things with short delay lines. I'll forward my findings if i make any headway on this.
it's totally my pleasure to mess around with oscillator/synth component stuff in pure data! But beware my advice because my stuff is pretty scrappy.
On Mon, Oct 1, 2018 at 5:15 PM oliver oliver@klingt.org wrote:
Carl S wrote:
A couple problems with the patch I posted. Any of the bob~ objects need the message [saturation 1( sent to them to function the way I intended.
Also, turns out I was totally wrong about the through zero concept- you need to clip the frequency input of the modulated osc at 0Hz. Attached is a patch that demonstrates this. one of the examples shows use of bob~ to restrict values
hi, carl !
first, thank you very very much for your kind help. all of your suggestions are interesting to study and all have a distinct modulation "flavour". i have to confess that i don't fully understand the [bob~] approach, but the rectifying example was very clear.
after a little tweaking i came to a solution that sounded the closest to the effect i was looking for. the difference in my approach is to clip the frequency input of the modulated osc not at 0 Hz but at the carrier frequency.
example attached
thanks again for your examples !
best
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