1. A mobile terminal, comprising: a display; an input unit; a memory including a database of information associated with functions or menus of the mobile terminal; and a controller configured to: initiate a voice recognition function in response to a touch input to a soft button displayed on the display or to a hard button on the mobile terminal, wherein the voice recognition function is maintained for a predetermined amount of time since the touch input to the soft button or to the hard button if there is no voice input detected by the mobile terminal during the predetermined amount of time, and wherein an audio information indicating an activation of the voice recognition function is provided; convert a voice instruction input into text in response to detection of the voice instruction input; display information to inform execution of a menu or function associated with the voice instruction input if a recognition rate of the voice instruction input to be related to the menu or function is higher than a threshold value, wherein the recognition rate of the voice instruction input with respect to the menu or function is improved via learning from the detection of the voice instruction input and the execution of the menu or function; and execute the menu or function if the menu or function is only one among the functions or menus with the recognition rate of the voice instruction input to be related to the menu or function higher than the threshold value and display a plurality of menus or functions if a recognition rate of the voice instruction input to be related to each of the plurality of menus or functions is greater than the threshold value, wherein one of the plurality of menus or functions is executed in response to selection of said one of the plurality of menus or functions.
1. A mobile terminal, comprising: a display; an input unit; a memory including a database of information associated with functions or menus of the mobile terminal; and a controller configured to: initiate a voice recognition function in response to a touch input to a soft button displayed on the display or to a hard button on the mobile terminal, wherein the voice recognition function is maintained for a predetermined amount of time since the touch input to the soft button or to the hard button if there is no voice input detected by the mobile terminal during the predetermined amount of time, and wherein an audio information indicating an activation of the voice recognition function is provided; convert a voice instruction input into text in response to detection of the voice instruction input; display information to inform execution of a menu or function associated with the voice instruction input if a recognition rate of the voice instruction input to be related to the menu or function is higher than a threshold value, wherein the recognition rate of the voice instruction input with respect to the menu or function is improved via learning from the detection of the voice instruction input and the execution of the menu or function; and execute the menu or function if the menu or function is only one among the functions or menus with the recognition rate of the voice instruction input to be related to the menu or function higher than the threshold value and display a plurality of menus or functions if a recognition rate of the voice instruction input to be related to each of the plurality of menus or functions is greater than the threshold value, wherein one of the plurality of menus or functions is executed in response to selection of said one of the plurality of menus or functions. 4. The mobile terminal of claim 1 , wherein the information comprises data information output associated with the execution of the menu or function.