Question

what is reverberation?how it is controlled in an auditorium?

Answer 1

it is controlled by kepting it in the corner side

Answer 2

Reverberation, in psychoacoustics and acoustics, is the persistence of sound after a sound is produced. A reverberation, or reverb, is created when a sound or signal is reflected causing a large number of reflections to build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and air.This is most noticeable when the sound source stops but the reflections continue, decreasing in amplitude, until they reach zero amplitude
It can be reduced by
The Seven Ways to Reduce Noise.
Reduce the sound power of the source. While not always practical, sometimes “turning down the volume” is the best solution. ...
Increase distance. ...
Use a barrier or enclosure. ...
Add absorption / diffusion. ...
Use masking sound. ...
Improve vibration isolation. ...
Consider active control.