System and method for fingerprinting datasets

摘要

Disclosed is a method for identifying a candidate audio segment from an outbound telephone call. The method comprising the steps of: a) creating a spectrogram of the candidate audio segment; b) creating a candidate binary fingerprint bitmap of the spectrogram; c) comparing the candidate binary fingerprint bitmap to at least one known binary fingerprint bitmap of a known recording; d) if the candidate binary fingerprint bitmap matches one of the at least one known binary fingerprint bitmaps within a predetermined threshold, declaring the match; and e) if the candidate binary fingerprint bitmap does not match one of said at least one known binary fingerprint bitmaps within the predetermined threshold, using an alternate process to analyse the candidate audio segment.