3. The method of claim 1 wherein determining whether the speaker is an authorized user from the determined likelihoods comprises is taken at any point in time by selecting the speaker having the highest value of the loglk variable from among a plurality of loglk variables for a plurality of speakers.
3. The method of claim 1 wherein determining whether the speaker is an authorized user from the determined likelihoods comprises is taken at any point in time by selecting the speaker having the highest value of the loglk variable from among a plurality of loglk variables for a plurality of speakers. 4. The method of claim 3 wherein a confidence value can be calculated by evaluating a difference between loglk variables for two speakers having the highest loglk variables.