Hello Sampo,
On 6 Mar 2012, at 3:14 pm, Sampo Syreeni wrote:
Ville pulkki was once kind enough to demonstrate this to me in an anechoic
chamber. A hexagonal decode sounded much
worse than a square one, and at 12 equally spaced speakers, it was just
muddled, but otherwise not as bad as at 6. I'm guessing
there is sort of a critical band between the minimum number necessary for first order and numbers which start to overcome
spatial aliasing from the rig (20-40?) where things first go worse, and then slowly start to return towards better.
Interestingly enough... this seems to imply that for HRTF decoding,
you're best choices are either
a) build a decoder using the smallest number of speakers necessary
(between 6 and 8 for FOA)
b) build a decoder using your complete HRTF sample set (I.e., as many
points from your set as your decoder method easily accommodates)
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