The formula of reverberation time by W. C. Sabine is a foundation of architectural acoustics.
The reverberation time was probably slightly less than 1.6 seconds when fully occupied.
Centrifugal glass cotton can be made into wallboard, ceiling, space sound-absorbing body etc, can be absorbed in a room, reduce doubled the reverberation time, reduce indoor noise.
These halls were relatively small by today's standards with seating capacities ranging from 400 to 600, and reverberation times were generally less than 1.5 seconds (Bagenal and Wood, 1931).
