13. The method of claim 10, wherein step (III) comprises the step of updating state transition probabilities according to an equation: ##EQU13## where "s.sub.j " is a state of said hidden markov model and "s.sub.j " is a state of said hidden markov model.
10. The method of claim 9, wherein step (b) comprises the steps of: (I) updating said one or more output probability distributions; (II) updating said one or more mixture coefficients; and (III) updating state transition probabilities.