10. A voice recognition method of an electronic device comprising: receiving a user voice; obtaining a word corresponding to the user voice using a user pronunciation lexicon, obtaining a first pronunciation for a phoneme included in the user voice, comparing the first pronunciation and a second pronunciation pre stored for the word, identifying a pronunciation pattern by using a result of the comparing, updating a user pronunciation lexicon according to a pronunciation pattern rule obtained based on the pronunciation pattern, wherein the pronunciation pattern rule is a rule that a user repeats according to at least one of a pronunciation habit of the user and a pronunciation characteristic of the user.
15. The method as claimed in claim 10 , wherein the updating comprises generating a variation rule for a predetermined word based on the obtained pronunciation pattern rule and updating the user pronunciation lexicon based on the generated variation rule.