1. An automatic speaker verification system comprising: a receiver, the receiver obtaining enrollment speech over an enrollment channel; a means, connected to the receiver, for developing an estimate of the enrollment channel; a first storage device, connected to the receiver, for storing the enrollment channel estimate; a means for extracting predetermined features of the enrollment speech; a means, operably connected to the extracting means, for segmenting the predetermined features of the enrollment speech, wherein the features are segmented into a plurality of subwords; at least one classifier, connected to the segmenting means, wherein the classifier models the pluraility of subwords and outputs one or more classifier scores.