Is this principle of "variation in harmonics" possible to combine with a frozen spectrum (Jean-Francois-Charles-style), e.g. of a violin playing a tone? In other words, using the harmonics of such a spectrum instead of simple sine waves, as in the example? Maybe one could use a denoiser module to find the 10 most "significant" harmonics, and then bind these to a multislider?
maybe ask gently to the developer if he would compile a pc version some day, or even search for the source code of the external: it looks like sigmung~ is part of PureData, and PureData is open source i think…?
Then ask on the dev forum if someone can compile a pc max external for this GREAT – and for me essential – object.
I really don’t know about an other object. My feeling is that sigmung~ is doing something rare and rather complex, and is doing it really good.