Jeff,

> Because it's a resonance and not a ray ... Explained on page 73 of Newell's Recording Studio Design. <

Thanks. I looked up that reference, but your two statements seem contradictory in that light. Newell's book says that each "leg" of travel accounts for half a cycle, but doesn't that then imply a ray?

> The Sabine equation (used to calculate absorption in the reverb room method) does not calculate percentages. It calculates absorption. <

That doesn't really explain anything. Either the edge surface adds to the total absorption or it doesn't. If it doesn't, then what causes absorption coefficients greater than 1.0?

> I have posted elsewhere on the uncertainty principle as it applies to impulse response measurement. <

Bert and I have been arguing whether a pulse can contain energy at frequencies lower than the pulse length would imply. You're talking about the accuracy of measurements made with a short gate time. These are not the same thing!

Thanks.

--Ethan

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