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I'm guessing that triple correlation could also be rendered into pretty pictures, did you try that?

Heh, you're reading my mind. Try the URL below, but don't increase fps/n params, as that will eat all your GPU cycles very quickly:

soundshader.github.io/?s=acf3&n=512&fps=1&acf.decay=0

It effectively computes the bispectrum as B(p, q) = F(p)F(q)F^(p+q) and runs the inverse 2D FFT to restore the triple autocorrelation. The results are interesting, but not impressive and very GPU intensive (NxNxlog(N) per frame is slow). In any case, I strongly believe that bispectrum is hiding something interesting and I just haven't figured how to see it.

Cool! Maybe it's because it contains phase information which is not that relevant to hearing. FWIW I remember long time ago using it for image processing and the trick was to look at a sections of it, i.e. TC(p1, p2) where one of p1 or p2 was fixed.

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