Question

Why are the roof and walls of an auditorium covered with sound-absorbing materials?

• A. To increase the echo
• B. To increase the sound's loudness
• C. To control the sound's frequency
• D. To reduce multiple reflections

Answer 1

The correct option is D To reduce multiple reflections

Reverberation causes sound persistence in concert halls due to multiple echoes. The roof and the walls are covered with sound-proof materials to reduce the echoes and hence, avoid unnecessary multiple reflections.