4. A method comprising: adapting two or more reference templates stored in a computer-readable memory by replacing only corresponding portions of existing data within said reference template with a weighted interpolation of said corresponding portions and corresponding data within a test utterance, wherein each template includes data indicative of physical characteristics of a voice of a person.
4. A method comprising: adapting two or more reference templates stored in a computer-readable memory by replacing only corresponding portions of existing data within said reference template with a weighted interpolation of said corresponding portions and corresponding data within a test utterance, wherein each template includes data indicative of physical characteristics of a voice of a person. 5. The method of claim 4 , wherein adapting said reference templates comprises: performing a dynamic time warp alignment between said reference templates and said test utterance; matching one or more frames of said test utterance to corresponding frames in each of said reference templates; selecting one of said corresponding frames that is most similar to said one or more frames of said test utterance as a best-match frame; and replacing original data within said best-match frame with a weighted interpolation of said original data and data within said one or more frames of said test utterance.