What is the term used for the persistence of sound in a large hall due to repeated reflections from walls and other surfaces?

Correct option is C

The correct answer is (C) Reverberation
Explanation:
· Reverberation is the persistence of sound caused by multiple reflections from surfaces such as walls, ceilings and floors.
· Common in large halls, auditoriums and empty rooms.
· Excessive reverberation decreases clarity of speech and music.
Information Booster:
· Reverberation time is measured using RT60, the time taken for sound to decay by 60 dB.
· Materials like carpets and curtains reduce reverberation.
Additional Knowledge:
· Refraction: bending of sound waves.
· Diffraction: spreading of waves through openings.
· Interference: constructive or destructive combination of sound waves.