Signal distortion occurs when a signal, such as an audio or radio wave, is altered from its original form during transmission. This can happen due to various factors, including interference, noise, or limitations in the equipment used. As a result, the received signal may not accurately represent the intended message, leading to a loss of quality or clarity. There are different types of signal distortion, including amplitude distortion, phase distortion, and frequency distortion. Each type affects the signal in unique ways, impacting how it is perceived or processed. Understanding these distortions is crucial for improving communication systems and ensuring accurate signal transmission.