Question

Volume of a Hall is 5000 cubic metre. If total absorption is 200 O.W.U., then calculate reverberation time of hall.(answer as been in second)​

Answer 1

Answer:

v o l u u m e= =२ ४ ० मी

३

एक आर ई एक= =२ 7 । 2 मी

२

+४ ०×० । 5 मी

२

= 47.2

आर । टी ।= =० । १ ६ १×

ए

वी

उन्होंने कहा कि इस तरह की घटनाओं को रोकने के लिए सरकार ने कई कदम उठाए हैं।

= 0.8186s

Answer 2

Answer:

The reverberation time is 4s.

Explanation:

Given the volume of a hall,  V = 5000 cubic metre

Total absorption is 200 O.W.U.

O.W.U refers to the open window unit is the unit of average absorption coefficient, equivalent to Sabines.

Reverberation time is the time required for the sound to decay over a specific dynamic range, usually taken to be 60 dB in a closed room.

The Sabine's formula for the reverberation time is

$R_{60}=\dfrac{0.16\times V}{S}$

where V is the volume of the room and S is the absorption coefficient in sabines.

Substituting the given values in the formula, the reverberation time is $R_{60}=\dfrac{0.16\times 5000}{200}=0.8\times 50=4s$

The reverberation time is 4s.