15. The device control device of claim 1 incorporated in a navigation device so constructed as to be mountable on a vehicle, wherein the process execution means specifies a content of a navigation process to be performed based on the specified content of the uttered speech, and performs the specified navigation process.
15. The device control device of claim 1 incorporated in a navigation device so constructed as to be mountable on a vehicle, wherein the process execution means specifies a content of a navigation process to be performed based on the specified content of the uttered speech, and performs the specified navigation process. 16. The device control device according to claim 15 , further comprising: information acquisition means which acquires information via predetermined communication means; and speech output means which outputs a speech based on the information acquired by the information acquisition means, whereby when the navigation process specified by the process execution means is to output the information acquired by the information acquisition means, the speech output means outputs a speech based on the information.