I haven't seen this method posted anywhere so i thought i'd share it. It doesn't alias audibly, within my hearing range at least, at 96k sr.

It works by clipping the peaks of the wave and replacing them with a sine function.
Theres some maths involved in scaling it with frequency, and patching the triangle and the sine parts together, but nothing too heavy. Uses under 1% cpu per instance on my 2010 mackbook, at 96k.

Note.
-I scaled the cutoff frequency (Above which it outputs a pure sine wave) for a 96k samplerate, so that might have to be adjusted a bit for lower rates. Just play with the cutoff constant (now 18800).
-The overall amplitude diminishes as the frequency increases. Because i prefer it this way.

splicetri~.pd splicetri~-Help.pd

edit. Apparently abs~ is from zexy. It will work without it, but won't handle negative frequencies correctly..

Thanks for sharing!

In case :

/sin~
... couldn't create

put:

[-~ 0.25] -> [cos~]

instead of [sin~] or use creb.

(as suggested there: https://forum.pdpatchrepo.info/topic/11936/hard-to-find-some-objects-sin-and-prvu/2)

Works great on Mac M1!

@artureczq thanks for the heads up!
A completely unrelated question, how is your general experience with the M1's ARM architecture? Do you need to make any externals yourself? Or do the arm compilations on deken work?

this is a really strange approach.