On Sun, Oct 30, 2016 at 11:40:50PM +0100, Jörn Nettingsmeier wrote: > Also, I think things get even funnier when you consider you don't > have three pairs of omnis, for a differential receiver along each > spatial axis, but rather a tetrahedron of omnis, and the joys of > mapping that to B-format.
That, in theory, is not so difficult. Problems start in real life. If your capsules are 2 cm apart, then at 100 Hz you need around 29 dB gain to bring the difference signal up to the same level as one of the mics. That also means that gains must be matched to 0.1 dB or so to get something close to a fig-8, and noise will be increased by 32 dB. And the required gain increases by 6 dB for each octave down. > You could make six dipoles, one along each edge. But with 4 inputs you can have only 4 independent signals. 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 [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
