Reverberation time of changing room size?

Question

A room of ceiling height h, with a rectangular floor of dimensions w and l is measured to have a reverberation time of 1.10s. In this room the walls have effectively no absorption at all and the ceiling and floor have an absorption coefficient of 0.9. If h and w are both doubled, what is the new reverberation time (in s)?

Update:

Tr = 55.2 (V / cA)

55.2 is a constant..

V is volume

c is the speed of sound (1120 ft/s)

A is the area

I'm pretty sure This is the needed equation.

Mark P · Accepted Answer

If h and w are doubled, the floor area is quadrupled and the volume is quadrupled, therefore Tr is quadrupled as well. If your equation is correct, the answer would be 4.40 s.

Mike Shepard · Answer

yea

Reverberation time of changing room size?

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