Question

What is echo find the experience for time to obtain an echo

Answer 1

Explanation:

the reflection of sound is called an echo.

Answer 2

Explanation:

The reflection of sound is called an echo.

If the wall is relatively flat, perpendicular to the source of the sound, and far enough away (but not too far), then you can hear the reflected waveform or echo. If the sound comes back in about 0.1 second or longer, you can readily distinguish the echo.