Question

The intensity of reverberation is higher in a closed and empty house.
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Answer 1

Answer:

because there is no sound absorbing materials

Answer 2

The reverberation time is larger for an empty hall than for a crowded hall because there are many sound absorbers present in a crowded room, whereas the sound is reacted back by the walls of an empty room. Therefore it persists for a longer time in an empty hall. 

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