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Index/Topics/Electric Network Frequency (ENF) Analysis

Electric Network Frequency (ENF) Analysis

Method to verify claimed recording time and detect insertions or deletions

Fact-Checks

2 results
Jan 30, 2026

What forensic steps are used to authenticate viral audio recordings in high-profile allegations?

Forensic teams use a layered, reproducible workflow to : secure the original file and chain of custody, inspect device- and file-level evidence, run waveform/spectrographic and , compare voices and ba...

Jan 16, 2026

What forensic audio-authentication techniques do journalists use to verify viral recordings?

Journalists verifying viral audio rely on a mix of newsroom verification, human listening and specialized forensic techniques—starting with provenance and chain-of-custody checks and extending to spec...