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In Reply to: RE: Angling of absorptive panels posted by David Aiken on July 03, 2008 at 16:09:19
> I have a strong feeling that absorption is greatest when the sound strikes the panel directly rather than at an angle, and that absorption decreases as the angle of incidence of the soundwave reduces below 90 degrees. <
You are correct and this is well known (among acousticians).
--Ethan
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