Website that can generate *.stl waveform out of your sound, free: 3dprintedsound.com

[DevTim]

that's pretty neat :-) What length sound file works best ?

It doesn't really matter, it may take more time to calculate amplitude points, but other than that its about the same. If you have short sound file, and you feel that there is too few points, you can lower the smoothing parameter. That way you will get more detailed model. Did you feel that something is missing or do you wish something could be added? Is site easy to use, or do you think I could add some guide to it?

[curious aardvark]

haven't uploaded any sounds yet :-)
looked pretty simple to use.
here's the direct link: https://3dprintedsound.com/

Tried - works well :-)