And related stuff.
Does anyone have any good reading material they could point me to on the subject? (it really does not help that there are so many different names for the same thing sometimes).
I understand why the measured sound absorption coefficients can be more than one, with the refraction at the edge (and it is always rounded down to one in that case).
But. How is it possible for the coefficient to be one in the first place, the equivalent of an open window, with *no* sound reflected??? There must be some, always. But that is what it says right in the definition. What I think they must mean is that it is, for the purposes of measuring the reverberation time, which because it measures the time till the sound energy is reduced to 1/1,000,000 or the original value ( 60 db reduction) then a sabine of 1 must mean the reflected sound wave was reduced by 60 dB. Is this correct?