Question

Reverberation time can be controlled by
(a) Adjusting the volume of hall
(b) By increasing the sound absorption in the hall
(c) By adjusting effecive area of absorption
(d) None of the above​

Answer 1

Answer:

The reverberation time can be controlled by a, b and c.

Explanation:

The formula is time = .161 * volume / total absorption(ie. summation of a * area)

Answer 2

Answer:

(b) by increasing the sound absorption in the hall.

Explanation:

reverberation time can be reduced by using materials on the walls or ceiling which can absorb sound waves
eg: plastics ,curtains etc.

reverberation time is the time required by the sound in a room to decay over a  specific dynamic range.