Hi!

I'm making a simple vibrato/chorus effect in pd, using a vd~ modulated by an osc~. Unfortunately, the modulated sound is rather steppy. How do I achieve a smoother sound?

I suspect the osc~ is the issue here. From reading the help file, I don't know how the sine wave is made – whether it is mathematically computed, or read from a wavetable, like cycle~ in MaxMSP.

So, should I try and upsample in a subpatch (is that possible?), or make use of a higher resolution wavetable, e.g. in tabread~?

Thanks in advance!

[osc~] uses a 512 point table with linear interpolations. Not the best, but you shouldn't get "steppy" results at all. I imagine something else might be the problem. Can you post an example patch?

Thanks a lot for the quick answer!

I found the reason for the stepping. The vd~ doesn't like going all the way down to 0 ms delay time, so I added one ms to the modulated delay time. Problem solved.

(Anyway, good to know how the osc~ works!)

Ah, yes. [vd~] needs one previous sample for the interpolation, so you're stuck with at least a one-sample delay when using it.