Explain what aliasing is with respect to sampling an analog

Explain what \"aliasing\" is, with respect to sampling an analog signal. How can it be prevented?

Solution

In signal processing, aliasing is an effect that causes different signals to become indistinguishable when sampled. It also refers to the distortion that results when the signal reconstructed from samples is different from the original continuous signal.

prevention :one way is to increase sampling frequency above than the nyquist criterion