Noise sources such as natural forces and in some cases human activity (both intentional and accidental) begin influencing the quality of signals propagating from the sender to one or more receivers.
Takalt chund assahaten tin batil d daɣ ihandagan iyyad tamachɣult tan awadim ( ta otas d ta war otes) tassinta tarna n tadoganen ti naffaznen ɣur marasal har almursaliya tan ajjotnen