Oops, that should have been “About N3D…” instead of “About ACN...”
I agree with Fons that there isn’t much reason for multiple inconsistent definitions, especially in the case of HOA, and then even first-order can be treated in the same framework. There is the intuitive ‘XYZ’ interpretation of first-order signals (which disappears altogether already from second order), which is probably useful for design of first-order systems, but that doesn’t mean that the signals cannot be stored in a more universal ACN/(S)N3D format, and convert the B-format tools to handle the ACN signals internally. It is just re-arranging of channels and a scaling in the end. Regards, Archontis On 03 Apr 2016, at 13:29, Politis Archontis <archontis.poli...@aalto.fi<mailto:archontis.poli...@aalto.fi>> wrote: The advantage of ACN is that it is a natural ordering of the HOA channels described with a single number q=n^2+n+m+1 (with n the order and m the degree), and it is aligned with pretty much any other field using spherical spectral analysis (graphics, signal processing, physics, etc...) , making transfer of knowledge from these fields to ambisonics much less confusing. About ACN, if you are working on the more theoretical side of ambisonics, it is the only normalization that makes sense again since it keeps the spherical harmonics orthonormal and it simplifies most things on paper a lot! It can just as well be kept as a standard, however conversion to other normalizations (such as SN3D) are just a gain factor per order and very easy to do. Regards, Archontis -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160403/d3d7977d/attachment.html> _______________________________________________ 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.
