1. A system for performing a speech recognition procedure, comprising: a recognizer configured to compare input speech data to phone strings from a vocabulary dictionary that is implemented according to an optimized phone set, said optimized phone set being implemented with a phonetic technique to separately provide consonantal phones and vocalic phones, said optimized phone set being implemented in a compact manner to include only a minimum required number of said consonantal phones and said vocalic phones; and a processor configured to control said recognizer to thereby perform said speech recognition procedure.