bn:01528788n
Noun Concept
Categories: Electrical phenomena, Sounds by type, Articles with short description, Noise
EN
mains hum  60 Hz hum  50-cycle hum  50hz hum  60hz hum
EN
Mains hum, electric hum, cycle hum, or power line hum is a sound associated with alternating current which is twice the frequency of the mains electricity. Wikipedia
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EN
Mains hum, electric hum, cycle hum, or power line hum is a sound associated with alternating current which is twice the frequency of the mains electricity. Wikipedia
An electric or electromagnetic phenomenon Wikipedia Disambiguation