6. The method of claim 5 comprising the further steps of: (h) repeating steps (c) through (g) for each word in a predefined script; and (j) recomputing the values of the probability items based on the most recent adjusted values of the counts after step (h).
5. The method of claim 4 comprising the further steps of: (f) for each count used in deriving a probability item in the known word model, determining a plus count value from the generated outputs of the uttered known word; (g) the plus count value of a subject count serving as an addend in defining the adjusted count value for the subject count; the adjusted value of a subject count being determined by adding the stored value and plus count value and subtracting the minus count value.