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Still, I can't see the connection to early reflections!

Early reflections are one issue, room corners another, no connection between the two.

While SPL in corners is higher than in the room, SPL at the walls is higher, too (Waterhouse effect). So why mention only the corners, not the walls.

Further, I don't quite see how SPL in corners affects SPL at listening position. Unless your listening position is in a corner, of course.


"All you need in order to locate acoustic peaks in the room is a sound pressure meter and test tone."

When I play a pure sine tone, I get a standing wave pattern. When I play a warble tone, that pattern almost disappears. When I'm listening, I use two ears. These ears have auditory filters banks, these ears produce curves of equal loudness, these ears produce binaural decoloration, the signals of these ears is integrated and processed in the brain stem. A measurement mike does nothing of all this.

At low frequencies interaural level difference at both ears is zero, because the wavelengths are long as compared to the head's dimensions. When I measure SPL at two points 15 cm apart, I get very different readings. How do single mike measurements relate to what we hear?

Still waiting for the "pretty easy to demonstrate"!


Klaus


Edits: 12/03/07
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