1. In Communication , this is any interference with a communication’s clarity or accuracy. Superfluous message data or words are noise as they detract from the message’s meaning. 2. In Quality control, this is the variability in ambient conditions , faulty machine performance , or uneven material quality or human factor inputs. 3. In Telecommunications , this is random disturbance becoming part of a communication signal, due to circuit components, electromagnetic interference, or weather conditions. Also known as line noise.
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