Hi, For the number of speaker to use, you might want to look at the paper from Peter Stitt on the spectral impairment of enclosed HOA (Ambisonics Symposium in 2012). I also did a study beforehand on the influence of microphone and loudspeaker setup on perceived HOA reproduced soundfield (Ambisonics Symposium in 2009).
From what I experienced, the number of loudspeaker won’t affect much the position of the image but will change the timbre. It will also give phase effect. You can change the decoder to minimise phase effect, but then you might change the image size. And just to have one more voice on the difference between vbap and ambisonics, I agree on what’s being said! Ambisonics will englobe you (even with first order...I had a striking experience with Soundfield recording, not virtual sources though), vbap will be more precise, for static sources. For moving sources, we compared vbap and 3rd order ambisonics on a horizontal ring of 8 speakers. It was a while ago so my memory is a bit blurry but from what I remembered HOA was smoother for moving sources than Vbap that created holes depending on the position of the image source compared to the listener (especially on the sides). We did try things with elevation, but this bit I don’t remember it, sorry! Cheers, Stephanie -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20190507/2007a8c8/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.
