What is meant by electrical noise?

Electrical noise refers to unwanted electrical signals that can interfere with the performance of electronic systems. This noise can originate from various sources, including electrical components, external electromagnetic interference, or even thermal fluctuations within components. It is detrimental to the clarity and accuracy of signals being processed, especially in sensitive applications like communication systems, audio equipment, and precision measurements.

The presence of electrical noise makes it challenging to distinguish the desired signal from the background disturbances, which can lead to errors in data transmission, reduced audio quality, and inaccurate readings in measurement devices. Understanding and managing electrical noise is critical for designing reliable electronic systems.