Electrical network frequency analysis: Difference between revisions

Revision as of 09:15, 6 June 2010

Revision as of 09:15, 6 June 2010

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{{hoax}}

'''Electrical network frequency analysis''' is a [[forensic science]] technique for validating [[audio recording]]s by comparing frequency changes in background [[mains hum]] in the recording with long-term high-precision historical records of [[mains frequency]] changes from a database.<ref>{{cite web|url=http://www.theregister.co.uk/2010/06/01/enf_met_police/|title=Met lab claims 'biggest breakthrough since Watergate'|author=Chris Williams|publisher=The Register|date=2010-06-01}}</ref><ref>{{cite web|url=http://www.diamondcut.com/Downloads/AppNote4DiamondCut.pdf|title=Digital Audio Recording Analysis: The Electric Network Frequency Criterion|author=Catalin Grigoras|publisher=Diamond Cut Productions, Inc}}</ref>