MCQ
A sharp sound becomes a musical note in an auditorium then, it is called:
- AEcho
- BEchelon effect
- CReverberation
- DShrillness
Explanation:
If there is regular structure similar to a flight of stairs or asset of railways in the hall, the sound produced in front of such a structure may produce a musical note due to regular successive echoes of sound reaching the observer. Such an effect is called echelon effect. If the frequency of this note is within the audible range, the listeners will hear only this note prominently.
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