Hi Michael, What I had in mind are t-designs, which exist till a very high number of points and they have been used by various researchers in decoder design (and spherical acoustic processing in general). These are perfectly uniform for all practical purposes. And there exist other uniform arrangements on the sphere, mainly distinguished by the method that generates them, such as Fliege grids and Lebedev grids, all used in research for ambisonic-related research.
For irregular arrangements, I mentioned already the work of Zotter, Frank etc. from IEM Graz, all published. There is also the work of Epain and rest from Sydney university, with a decoder that has constant energy vector spread, also suitable for irregular setups. And there is also the work of Davide Scaini from Barcelona media and Pompeau Fabra, which targets irregular setups using numerical optimisation on the velocity and energy vectors, and who has also released python code to produce decoders. Regards, Archontis > On 10 Feb 2016, at 00:40, Michael Chapman <s...@mchapman.com> wrote: > >> Hi Martin, >> >> HOA are not limited to icosahedra or only uniform arrangements (which >> exist also beyond the 5 platonic solids). > > Details, please. > > Michael > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit > account or options, view archives and so on. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
