On Sat, Dec 05, 2015 at 11:33:42AM +0100, Jörn Nettingsmeier wrote: > >Remains the question of _how_ to actually use the available > >signals to produce anything surround. Linear beamforming is > >limited to LF (due to aliasing). The only way I see is some > >rather complicated non-linear 'logic' decoding. This kind of > >thing is still a research topic. > > use two diametrically opposite mics with the sphere as a stereo > baffle, and then crossfade to other pairs as the viewer turns? > i guess with some help from a capsule in front and in the back you > could even fake some binaural front/back cues to reduce confusion.
Yes, that could work (for headphones). The main problem with this is how to interpolate between pairs of mics. What is needed is to interpolate the ITD without introducing phasing. Some solutions for this have been proposed, but all I know of require much more pairs to work well. Adding front/back and elevation cues is indeed possible, but again not as simple as it looks. This is a topic that some people I know are working on, but unfortunately I can't say much more... The approach could work for VR glasses, but not for reproduction via speakers. 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.
