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System and method for fingerprinting datasets

  • US 9,934,305 B2
  • Filed: 01/31/2014
  • Issued: 04/03/2018
  • Est. Priority Date: 03/28/2012
  • Status: Active Grant
First Claim
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1. A method for extracting acoustic fingerprints for common recordings comprising the steps of:

  • a. identifying segments of interest from a dataset of recordings by a means of classification using a Call Progress Analysis system;

    b. generating acoustic fingerprint candidates for said identified segments, each of the acoustic fingerprint candidates being computed from a plurality of power spectrums of the corresponding one of the identified segments, each of the power spectrums comprising a plurality of frequency bands;

    c. adding said acoustic fingerprint candidates to an acoustic fingerprint database;

    d. repeating steps (a) and (b) to process the recordings in the dataset using the acoustic fingerprint database containing said acoustic fingerprint candidates added in step (c); and

    e. removing said acoustic fingerprint candidates from the acoustic fingerprint database that were not detected a specified number of times.

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