In certain auditoriums, due to multiple reflections, the sound persists for some time even after the source has actually stopped producing the sound.
(a) What is this phenomenon known as?
(b) Suggest two ways to overcome this disturbance.
(c) Cite two devices that utilize multiple reflections.

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Solution

(a) Reverberation: It is the persistence of sound after a sound is produced.

(b) To reduce reverberation, a large number of windows and ventilators should be provided or the walls of the auditoriums should be made rough.

(c) Megaphone and Stethoscope

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In certain auditoriums, due to multiple reflections, the sound persists for some time even after the source has actually stopped producing the sound.(a) What is this phenomenon known as?(b) Suggest two ways to overcome this disturbance.(c) Cite two devices that utilize multiple reflections.

(a) Reverberation: It is the persistence of sound after a sound is produced.(b) To reduce reverberation, a large number of windows and ventilators should be provided or the walls of the auditoriums should be made rough.(c) Megaphone and Stethoscope

In certain auditoriums, due to multiple reflections, the sound persists for some time even after the source has actually stopped producing the sound.
(a) What is this phenomenon known as?
(b) Suggest two ways to overcome this disturbance.
(c) Cite two devices that utilize multiple reflections.

(a) Reverberation: It is the persistence of sound after a sound is produced.

(b) To reduce reverberation, a large number of windows and ventilators should be provided or the walls of the auditoriums should be made rough.

(c) Megaphone and Stethoscope