16. The apparatus of claim 15 , wherein the controller is configured to generate information about the vocal command whose user's usage frequency is lowest and global user usage frequency is highest.
15. An apparatus for generating information for speech recognition, the apparatus comprising: a storage configured to store a usage frequency of a plurality of vocal commands corresponding to an electronic device; a controller configured to determine a vocal command from among the plurality of vocal commands and generate information about the vocal command corresponding to the electronic device based on at least one of a user's usage frequency of the vocal command, wherein the user's usage frequency comprises a count of the vocal command, and a global user usage frequency of the vocal command, wherein the global user usage frequency comprises a count of the vocal command; and an outputter configured to output the information about the vocal command in at least one of visual or audio form, wherein the information about the vocal command comprises a vocal command for controlling the electronic device.