3. The method of claim 2 wherein the matching of step (c) includes the step of selecting the candidate first portion having the minimum summed length among all of said summed lengths, thereby creating a match between the selected candidate in the unknown speech and the reference first portion.
2. The method of claim 1 wherein the comparing of step (b) includes the step of computing for each candidate first portion a summed length which is the sum of the lengths between each feature vector in the candidate first portion and each feature vector in said reference first portion.