11. The method of claim 9 further comprising the step of: weighting said first set of probabilities and said second set of probabilities unequally.
9. In a speech recognition system with a process of determining a highest first probability that an utterance is within a rejection grammar and a highest second probability that the utterance is within a main grammar, wherein the utterance is rejected if the highest first probability is higher than the highest second probability, and the utterance is accepted if the highest second probability is higher than the highest first probability, the rejection grammar process comprising the steps of: generating a selected digitized list of phoneme models in a language, said selected digitized list of phoneme models smaller than a digitized list of all phoneme models in the language, presenting a digitized sequential representation of the utterance for processing by the rejection grammar process, and calculating a first set of probabilities representing the match between the sequential representation of the utterance and sequential combinations, or paths, of the phoneme models from the selected digitized list of phoneme models.