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Q.

The process that causes the persistence of sound is called ____.


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Detailed Solution

The process that causes the persistence of sound is called reverberation.
The process that causes sound persistence in a large hall is called reverberation. The time a sound falls to zero from a high sound is called reverberation time. To reduce the reverberation caused in big halls and auditoriums, curtains, cushion chairs, draperies, carpets etc., are used. By the use of these materials, the noise caused by the sound and reverberation is cancelled.
 
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