Please find attached a bunch of waveforms built on the astroid curve and the golden ratio: https://en.wikipedia.org/wiki/Astroid
They are all built on this frame with different sine values always based on powers of the golden ratio.
They seem to be very efficient though I haven't tried them all
WD_sine astroide ALL1
Please find attached the complete Excel spreadsheet with the graphs for visualization.
After checking, the waveforms #160 to #170 are fine and work well with Spooky.
From #171 and above, the waveforms are too crowded for Spooky, they can be loaded but are distorted. They might be useful though, you may check.
For more details, please check the link from: