Is this the one you mean(the "strange article")?
http://www.regonaudio.com/SphericalHarmonics.pdf I wrote it myself! I surely did not mean for it to be strange at all. But the idea is intrinsically a bit complicated. What one is really doing is developing ad hoc eigenfunctions of the Laplacian on the sphere. This is not going to be really easy no matter how you do it, not if you really do it anyway. But the idea is in outline fairly simple. One is just trying to find some polynomials that when you restrict them to the sphere give you a way to approximate general functions on the sphere in a systematic way. I hope the article helps. I did the best I could! Robert _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
