15. An electronic device comprising: a user interface unit to receive input selecting a particular target keyword from a list of a plurality of target keywords; a download management unit configured to receive, via a communication network in response to the input, a keyword data file, the keyword data file including a keyword model for the particular target keyword and including compatibility information; a verification unit configured to determine whether the keyword data file is compatible with a keyword detection unit based on the compatibility information, wherein the download management unit is configured to receive a second version of the keyword model based on a determination that the keyword data file is not compatible with the keyword detection unit; and a keyword setting unit configured to assign the particular target keyword to a function of the electronic device in response to the input such that the function is activated in response to detecting, based on the keyword model, that an input sound received at the electronic device includes the particular target keyword.
16. The electronic device of claim 15 , wherein the download management unit is further configured to receive response sound data, the response sound data used to generate a response sound indicative of detection of the particular target keyword is included in the input sound.