Question

How reverberation is reduced in an auditorium or in a big hall answer

Answer 1

 reverberation is reduced in an auditorium or in a big hall by the following measures 
          1)by covering the walls and roof of the auditorium with sound obsorbant materials like compressed fireboard and rough plaster.
           2)providing open windows in space
            3)providing heavy curtains with folds so that the sound gets obsorbed 
            4)by using good sound obsorbing materials for seat 

Answer 2

We can reduce reverberation by installation of sound absorber like
•soft fiberous material on the wall
•soft cusion material on the chair
•material which absorb sound
• • increasing the number of Windows or air ventilation