Echo, from the Greek phrase “” (ch), refers to a sound or collection of sounds brought on by the reflection of sound waves from a floor again to the listener. It’s a widespread acoustic phenomenon that happens when sound waves bounce off laborious surfaces, corresponding to partitions, mountains, and even clouds, and return to the supply. The mirrored sound might be perceived as a repetition of the unique sound, creating an auditory impact often known as an echo.
Echoes can range in length and depth relying on the gap between the sound supply and the reflecting floor. In some circumstances, echoes might be helpful, corresponding to in sonar techniques used for underwater navigation and imaging. In different circumstances, echoes might be undesirable, corresponding to in live performance halls or auditoriums the place they will intervene with the readability of sound.
