I am playing around with Audacity and have been trying to generate tones with harmonics. Audacity does not seem to support it directly, but you can write a plugin to do it. The plugins are written in Nyquist (a variant of lisp) and there a small tutorial here. I do not have any experience with lisp and just want to write something similiar to the "Generate -> Tone" feature in Audacity with a harmonics field. Anyone have a simple example for a generate plug-in that I can use as an example? The plugins that come with Audacity are mostly "processing" types and the few "generate" plugins are not very straightforward.
Try the Buzz Tone example from the Sample Nyquist plugins for Audacity(at Sourceforge). I've never coded one of these, yet this example seems to make sense.
Also see Touch Tones.