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Audio Authentication

Definition

Assessment of consistency with the alleged manner of recording production, with stated limits. Preserve the authoritative recording and document acquisition, versions and analysis. Authentication assesses particular claimed histories using suitable technical observations.

Context
Recorded evidence

For example, an apparent discontinuity can be assessed against recording-system behaviour and processing history rather than being assumed to prove editing.

No single feature proves that a recording was never edited. Distinguish the tested claim, original material and any derivative used for listening or presentation.

Related terms

ENF
Electrical-network-frequency variation that may be captured in a recording. Analysis depends on recoverable signal and appropriate reference data. An ENF observation is...
Mach Cone
A Mach cone is an idealised geometric description of a shock disturbance associated with a source moving faster than the relevant wave...
TDOA
Difference in arrival time for a specified event at two sensors. Synchronisation, propagation conditions and event identification affect the measurement. The difference...

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