8. The system of claim 7 , wherein the biometric voice analyzer compares identification parameters of the feature vector against identification parameters of a stored feature vector of the speaker's voice.
7. The system of claim 6 , wherein the biometric voice analyzer: calculates one or more vocal tract shapes from the feature matrix; calculates a vocal tract configuration difference from the one or more vocal tract shapes; evaluates a variability in the spectrum of one or more phonemes; and establishes a variation bounds on a vocal tract configuration difference based on the variability.