ENF (Electrical Network Frequency)
The instantaneous frequency of the mains electricity supply (nominally 50 or 60 Hz), which drifts continuously and uniquely with time and is captured as background hum in mains-proximate audio recordings.
The instantaneous frequency of the mains electricity supply (nominally 50 or 60 Hz), which drifts continuously and uniquely with time and is captured as background hum in mains-proximate audio recordings.
Practice with mock tests, learn from structured notes, and get your questions answered by a global forensic community, all in one place.