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The hidden background noise that can catch criminals

Why it was recommended

less detailed but pretty accessible video [1] explaining how mains hum forensics work

Recommendationsubpar · Original

What it covers

Tom Scott explains Electrical Network Frequency analysis, where hum from the power grid in a recording is matched against grid logs to date and place it. He talks to a. It is for a general viewer who does not plan to take a prerequisite first.

Video details

Channel
Tom Scott
Length
5 min 31 sec
Year
2021
Open on YouTube

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