I am looking for such a saturation plugin, which lets me control the added harmonics, so I could only add octave harmonics, or even harmonics. I have seen such a plugin, but I sadly cannot remember it. Any ideas?
Melda has such plugins, but I cannot use it, due heavy PDC caused by the used FFT approach. So I need a plugin which also has only little or none PDC.
In theory, if I want to add the exact octaved harmonics to a played sound, would it require frequency or pitch analysis, or is there some kind of magical basic math algorithm?