17. The text-to-speech method of claim 11 , further comprising outputting, in response to input of a request for state information, an audible signal corresponding to current state information of the mobile communication terminal using a preset speech data set.
11. A text-to-speech method for a mobile communication terminal that is capable of displaying multiple objects on a screen in an overlapping manner, the method comprising: identifying a depth of an activated object on the screen; finding a speech data set mapped to the identified depth; and outputting an audible signal corresponding to textual contents of the activated object using the found speech data set.