On Tue, Nov 01, 2016 at 09:13:22PM +0100, Jörn Nettingsmeier wrote: > >>You could make six dipoles, one along each edge. > > > >But with 4 inputs you can have only 4 independent signals. > > Yeah, they are not linearly independent. I wonder how to map them... > was thinking you could derive those 6 dipoles independently (in the > hope that mismatches could then be compensated for more easily), and > then project each of them onto the XYZ space with a little summing > matrix. Not that I'd actually want to do that, though - with four > MEMs, the prize doesn't seem worth it :-]
Assuming the mics are in the usual 'tetra' positions, the A/B matrix would be the same as for a normal tetramic, e.g. X = LFU + RFD - LBD - RBU, but followed by those high gain -6 dB/oct filters on X,Y,Z. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ 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.
