[iamdan]

That's sweet! I'm trying to see how far I can push the web audio api but yeah the aliasing can be harsh. I think there are also some things I can do with filter nodes to smooth things out a bit

[meindnoch]

The aliased harmonics are folded back and mixed with the true harmonic content of the square wave. You can't filter them out without significantly affecting the square wave sounds.

[SonOfLilit]

You can work in a much higher sample rate and then downsample