Question

3. You must have observed the interior of the cinema hall. What measures have been

taken to reduce reverberation there?

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Answer 1

Answer:

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Answer 2

The measures taken to reduce reverberation inside cinema halls are as follows.

• Let's first understand what reverberation is. So, reverberation can be defined as the phenomenon of the persistence of sound, even after the source has been stopped. It happens due to the reflection of sound waves from surfaces such as walls, furniture, people inside a closed room or hall, etc.

• Reverberation can be observed inside large halls, auditoriums as well as rooms when they are empty.

• Inside a cinema hall, to reduce the reverberation, the ceiling and walls of the hall are covered with sound-absorbing materials. A few examples of such materials include compressed fibreboard, felt, rough plaster, etc.

• Further, carpets are also put on the floor for reducing the reverberation and absorb sound.
• Besides, the materials of the seats inside cinema halls are also selected on the basis of their sound-absorbing properties.