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System, method and computer program product for verifying an identity using voiced to unvoiced classifiers

  • US 20070100620A1
  • Filed: 10/31/2005
  • Published: 05/03/2007
  • Est. Priority Date: 10/31/2005
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • capturing a speech sample from a claimant claiming an identity;

    calculating a ratio of unvoiced frames to a total number of frames in the speech sample;

    determining an equal error rate value corresponding to the speech sample based on the calculated ratio;

    comparing the determined equal error rate value corresponding to the speech sample to an equal error rate value associated with the claimed identity to select a decision threshold;

    generating a match score based on a comparison of the speech sample to a voice sample associated with the claimed identity; and

    deciding whether to accept the identity claim of the claimant based on a comparison of the match score to the decision threshold.

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