Question

The decay of sound in an enclosed lecture hall of volume 3500 $m^3$ is shown in the Figure below. The sound source is switched off at point P. Using the Reverberation Time $(RT_{60})$ obtained from the figure, the calculated total sound absorption of the hall, in Sabins, is _____ (rounded off to the nearest integer).

Answer 1

The correct answer is : 430 to 510