7. The method of claim 5 , wherein the penalty is based on a difference between a standard deviation associated with the voice sample of the claimed identity and a ratio of unvoiced frames to the total number of frames in the voice sample associated with the claimed identity.
7. The method of claim 5 , wherein the penalty is based on a difference between a standard deviation associated with the voice sample of the claimed identity and a ratio of unvoiced frames to the total number of frames in the voice sample associated with the claimed identity. 9. The method of claim 7 , wherein the standard deviation and the ratio of unvoiced frames to the total number of frames in the voice sample associated with the claimed identity are stored with the voice sample of the identity.