 Theoretically ideal diffusor has dividers
I think one has to remember that in theory a perfect 2D-diffusor is meant to have dividers between the wells in both dimensions anyway. Ideal dividers should be both infinitely thin and infinitely stiff. The panels I've been thinking about are 3mm [~0.12"] thick, made of acrylic glass and glued to the surrounding wells of massive wood to get as close to this specification as possible. See: their thickness is way smaller than the wavelength even @ 20kHz so they basically won't reflect sound hitting their outer surface. They're not added to the theoretical design -- they're removed from the design in just one dimension (whereas most diffusors remove them in both dimensions)...
Question still is: does this compromise the diffusor design less than removing all dividers?
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