Thanks David, that makes sense. If i kept the performers within the horizontal spread of 2 capsules, rather than pointing at them, would there be any benefit? Ie 2 capsules axis parallel to the horizontal plane. So in effect the performance will be contained within 60 degrees of the 90.
Or maybe its just to much effort for little gain...:) Sorry if this has come up before, as i didnt get a hit on a search. Cheers Steve On Tue, 11 Sep 2018, 15:28 David McGriffy, <da...@mcgriffy.com> wrote: > Actually, directly on axis of one of the capsules may be the worst > direction for a tetrahedral array. While it's true that otherwise you are > slightly off-axis for a given capsule, with whatever coloration that might > cause, I believe the non-coincidence problems of the complete array > overwhelm this effect. When pointing directly at one capsule, the distance > to each of the other three is the same, thus the peaks and notches caused > by phase differences all line up at the same frequency and become one > bigger peak or notch. When a source comes in between two capsules, the > distances in the array don't match so the peaks and notches spread out in > frequency and help to smooth each other out a bit. Of course, the > calibration filters for tetrahedral mics attempt to correct for this > effect, but those filters more closely match the diffuse field average of > all directions than the more extreme results in the direction of one > capsule. > > David McGriffy > VVAudio > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180911/6aeeb688/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.
