I know that Owen has been discredited, but I do not feel it is inappropriate to pile on further given the gravity of the situation in which he has put himself. I got a hold of the Easy Voice Biometrics manual from SpeechPro.

One page of the manual says the following:

**False Rejection, FR is a probability of error when two voice samples being compared are considered different.**

The larger FR value is, the higher is the probability that two voice samples are of the same speaker.

False Acceptance, FA is a probability of error when two voice samples being compared are considered of the

same speaker. The smaller FA value is, the higher is the probability that two voice samples are of the same

speaker.

As a result of comparing two voice samples (one is a voice standard and another is indefinite), the FR and FA

values are calculated.

Likelihood ratio, LR is a measure of similarity between two voice samples being compared; it is calculated as

FR/FA probability ratio. The lager ratio value is, the higher is the probability that two voice samples are of the

same speaker.

Comparing all these three values, the system then calculates generalized similarity value for biometric

characteristics of the target and source speakers.Here is a screen shot of the EVB main window from SpeechPro.After a comparison of two audio samples, EVB reports FR,FA, and the generalized similarty value referenced above. This is the Matching percent seen in the EVB screen. It is not the likelihood ratio. Unfortunately, how SpeechPro calculates this matching percent is proprietarty information, but it is on a scale from 0-100%. I believe Dr. Nakasone references the likelihood ratio in his testimony, and Dr. Doddington uses the log of the likelihood ratio in the NIST evaluations.

Also, you should know that the relative strength of the match is not colored, grey, yellow, or green for poor,soft, medium, and strong matches, repectively.

Owen does not know that the key value in everything he is doing is not the likelihood ratio. If you have followed this far,

watch this interview with Soleded OBrien (video at the bottom of the page). It is Chris Farley meets Spinal Tap. He has no idea what any of the numbers mean, so he keeps avoiding her questions. He continues to call the Matching percent the likelihood ratio. This is the software that he sells and on which he teaches courses?

It gets much worse....