Sources of Acoustic Evidence Surveillance Overt – CCTV Covert (listening devices, telephone intercepts) Incidental (e.g. an incident recorded accidentally or in the background to something else)
Logged Calls Emergency services (000, 112, 999, 911 etc) "Careline" services Calls to banks, other financial institutions, insurance companies, bookmakers Calls from prison Radio communications (e.g. Coastguard, Air Traffic Control, Taxis, Railway Signalboxes) Other Recordings Voicemail and answering machine messages Broadcast (e.g. radio or "Youtube" Courtroom proceedings Hearings, tribunals, inquests "Black box" recordings "Fakes"
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