4. A method for recognizing a speaker according to claim 3 wherein said distinct group correspondence signal forming step further comprises; generating a set of quantizing threshold signals; and quantizing each normalized correspondence signal responsive to said quantizing threshold signals.
5. A method for recognizing a speaker according to claim 4 wherein said comparing step comprises; generating for each identified speaker and each recognized word a signal representative of the differences between the quantized normalized correspondence signals of the identified speaker and the quantized normalized correspondence signals of the unknown speaker, and recognizing the unknown speaker as one of the identified speakers responsive to said difference signals.