An echo is the reflection of sound waves off an obstacle, such as a tall building or a mountain, resulting in the same sound being heard again, albeit with a slight delay.
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An echo is the reflection of sound waves off an obstacle, such as a tall building or a mountain, resulting in the same sound being heard again, albeit with a slight delay.
An echo is a reflected sound wave that is heard after the original sound. It occurs when the sound wave bounces off a surface and returns to the listener with a perceptible delay.