well one could do the same as i've done with the thunder to make it more sparse... slowly clip the control (the one which is send through pow(x,6)) signal so only positive values get through... if you do this with all 3 droplets you can half the amount and if you want even more switch off / fade out the droplets completely... maybe all done with a new slider... at .9 start fade out half of droplet one, at .7 droplet 2, at .5 droplet 3 everything over a range of .2... and then the same thing with a range of .1 to fade the droplets completely out....
man i just should have done this... its easier than to describe it >_<
damn i just saw that positive and negative values give the osc a completely different frequency
what's the name of the vanilla butterworth? don't even know it ^.^
it's not really aliasing... i think?... i try to filter out all the frequencys which would go out of the audible range after the freqshift... therefore i need a very steep filter
those frequencys would reflect at 0hz or the nyquist-frequency... and its obvious what would happen in a feedback loop if i let them stay... they would reflect again and again... say a 1000hz shift on a 800hz frequency would lead to an alternating 800hz and 200hz... and a 500hz would stay where it is