Patent ID: 7650281

Claim:
A method of comparing voice samples to reduce false alarms: a) receiving a first voice sample; b) generating a first model of the first voice sample; c) reordering the first voice sample using a reordering method selected from the group of reordering methods consisting of time-reversal, segmental rearrangement, and a combination thereof; d) generating a second model of the result of step (c); e) receiving a second voice sample; f) generating a third model of the second voice sample; g) reordering the second voice sample using a reordering method selected from the group of reordering methods consisting of time-reversal, segmental rearrangement, and a combination thereof; h) generating a fourth model of the result of step (g); i) comparing at least one pair of models selected from the group of model pairs consisting of the first model and the third model, the first model and the fourth model, the second model and the third model, and the second model and the fourth model; and j) determining that the first voice sample matches the second voice sample if the results of step (i) are within a user-definable threshold.