Distortion measurement refers to the process of quantifying the degree to which a signal deviates from its original form. This is important in various fields, such as audio engineering and telecommunications, where maintaining signal integrity is crucial. Distortion can occur due to various factors, including equipment limitations and environmental influences. Common methods for distortion measurement include using tools like oscilloscopes and distortion analyzers. These devices help assess the quality of signals by comparing the output to the input. The results are often expressed as a percentage or in decibels, providing a clear indication of how much distortion is present in the system.