Definitions for "Electromagnetic interference"
Keywords:  emi, rfi, interfere, degrades, disrupt
See EMI.
The energy given off by electronic circuits and picked up by other circuits; based on type of device and operating frequency, EMI can be reduced by shielding; minimum acceptable levels are detailed by the FCC.
"Noise" generated in copper conductors when electromagnetic fields induce currents. EMI may be caused by other copper cables and is frequently caused by proximity to motors and machinery. The all-dielectric design of fiber optic cables makes them immune to EMI.
Typically experienced as a loud buzzing or low frequency hum coming from the speakers. Numerous household appliances, either in your home or nearby can cause this, primarily those with electric motors like vacuums, washing machines or electric garden tools like mowers, trimmers and clippers.