Which of the following actions would most effectively reduce reverberation in a large auditorium?
Installing curtains and carpets throughout the space
Reverberation is the persistence of sound due to repeated reflections from walls, ceiling and floor.
It is reduced by covering these surfaces with sound-absorbing materials such as heavy curtains, carpets and fibre boards.
Ordinary paint does not absorb sound, removing seats reduces absorption, and more loudspeakers only add sound.
Hence, the answer is installing curtains and carpets throughout the space.
Which of the following changes will most likely reduce the clarity of an echo in a large room?
If two sounds have the same frequency but different amplitudes, what will be different?
Which of the following statements best explains why sound can NOT travel through a vacuum?
What is the role of a medium in the propagation of sound?
Why can humans NOT hear the sound produced by a bat?
Which of the following statements best explains why striking a bell in a vacuum does NOT produce sound we can hear?
A student beats a large drum and blows a high-pitched plastic whistle at the same time. Which property of the sound waves is the main reason why the whistle sounds so different from the drum?
Which of the following methods is commonly used to measure reverberation in a room?
When a bell rings inside a jar and the air is slowly removed, what happens to the sound?
A student shouts facing a building 220 meters away. If the speed of sound is 330 m/s, how long after the shout will the echo be heard?
Ultrasonic pulse echo technique, a non-destructive ultrasonic testing, is employed for any possible flaw detection in a metallic bar of thikness 30 cm. If the arrival times of the ultrasonic pulses are 45 μs and 90 μs respectively, the distance of the flaw from one end of the steel bar at which the ultrasonic pulse initially enters the steel bar, will be: