ENF discontinuity
Definition
A break in the continuity of the extracted ENF trace that is inconsistent with the reference database. Can indicate a deletion (missing segment), an insertion from another recording, or a splice from a different session or grid, each with a characteristic signature.
Related terms
- Cross-correlation
- A statistical measure of the similarity between two time series as a function of a time lag. In ENF matching, the extracted...
- Electric Network Frequency (ENF)
- The instantaneous frequency of the alternating-current mains supply, nominally 50 Hz in most of the world and 60 Hz in North America....
- ENF reference database
- A continuously maintained archive of grid frequency measurements recorded at high temporal resolution, used as the ground truth against which a recording's...
- Short-Time Fourier Transform (STFT)
- A signal processing technique that applies a Fourier transform to successive short windows of a signal, producing a time-frequency representation. Used in...
- Transmission System Operator (TSO)
- The entity responsible for operating a high-voltage electricity transmission network in a given country or region. TSOs log grid frequency in real...
Explained in
- Electric Network Frequency Analysis for Audio DatingA break in the continuity of the extracted ENF trace that is inconsistent with the reference database. Can indicate a deletion (missing segment), an insertion...