Method of comparing utterances for security control

Details Method of comparing utterances for security control Method of comparing utterances for security control

1998-11-10

2000-12-12

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

704274, 704275, 704254, G10L 708

Patent

active

061610941

ABSTRACT:
A security method compares a present verbal utterance with a previously recorded verbal utterance by comparing frequency domain representations of the utterances, with multiple repeat utterances forming a basis for determining a variation in repetitious performance by an individual, and similar differences between enrollment and challenge utterances forming a basis for a similar analysis of variance between enrollment and challenge utterances. In one embodiment a set of enrollment data is searched by each challenge until either a match is made, indicating an action, possibly dependent upon the specific match, or no match is made indicating an abort.

REFERENCES:
patent: 5835894 (1998-11-01), Adcock et al.

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