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Question 15

What is reverberation? How can it be reduced?

Answer

Persistence of sound (after the source stops producing sound) due to repeated reflection is known as reverberation. Reverberation can be reduced by absorbing the sound using some materials as it reaches the wall and ceiling of the room and thus prevents the sound from getting reflected. This reflected sound reaches the other wall and again gets reflected partly. Due to this, sound can be heard even after the source has ceased to produce sound.

Some materials which are used to reduce reverberation are fibreboard, heavy curtains, plastics etc.

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