Room Acoustics Forum by Rives Audio

Room modes: calculation vs reality

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The formula for room modes assumes an empty room, perfectly rigid walls, no doors, windows etc, straight walls (no recesses).

Furniture has been shown to result in a shift of eigenfrequencies, further the modes are damped.

Non-rigid walls are damping the modes.

Structural weakness like doors affect mode pattern and amplitude.

Have you ever tried to find out how the mode situation in a real room looks like and how it compares to the situation as calculated? How reliable is the result of calculation?

Klaus

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