What is Noise (electronics)?
[[File:Pink.noise.png|thumb|Analog display of random fluctuations in voltage]] In [[electronics]], '''noise''' is a [[random]] [[wikt:fluctuation|fluctuation]] in an [[electrical signal]]. This happens in all [[electronics|electronic]] [[electrical circuit|circuits]].<ref name=noise>{{cite book |last= Motchenbacher C.D. & Connelly J.A. |title=Low-noise electronic system design |publisher=Wiley Interscience |year=1993 |isbn= |doi= }}</ref> Noise made by electronic devices varies greatly. In [[communication]] systems, noise is an error or random disturbance of useful information in a [[communication]] channel. The noise is the total of unwanted or disturbing energy from natural and sometimes man-made sources. Noise is usually distinguished from [[Interference (communication)|interference]], such as deliberate [[Radio jamming|jamming]] or other unwanted [[electromagnetic]] [[interference]]. If a message is transmitted in a natural language (a series of letters which make sense), then it is more resistant to noise than a spoken language. == References == {{reflist}} [[Category:Electronics]] [[Category:Telecommunications]]