8. The method as recited in claim 7 , wherein the comparing the phone sequence of the first candidate word to one or more phone sequences corresponding to speech recognition results includes determining an average per-utterance minimum distance match determined by: for one or more test utterances, determining a plurality of distance matches for each of the test utterances, each distance match corresponding to a distance match between a respective sequence of consecutive phones of a plurality of sequences of phones of the corresponding test utterance to the phone sequence of the first candidate word; determining a minimum distance match for each of the test utterances; and determining an average of the minimum distance matches of the test utterances.
8. The method as recited in claim 7 , wherein the comparing the phone sequence of the first candidate word to one or more phone sequences corresponding to speech recognition results includes determining an average per-utterance minimum distance match determined by: for one or more test utterances, determining a plurality of distance matches for each of the test utterances, each distance match corresponding to a distance match between a respective sequence of consecutive phones of a plurality of sequences of phones of the corresponding test utterance to the phone sequence of the first candidate word; determining a minimum distance match for each of the test utterances; and determining an average of the minimum distance matches of the test utterances. 9. The method as recited in claim 8 , wherein at least two respective consecutive sequences of phones of a test utterance for which a distance match is determined overlap.