1. A device control device comprising: speech recognition means ( 2 , 3 ) which acquires speech data representing a speech and specifies words represented by the speech by performing speech recognition on the speech data; specifying means ( 7 ) which specifies a content of the speech uttered by an utterer based on the words specified by the speech recognition means ( 2 ); and process execution means ( 7 ) which specifies a content of control to be performed on an external device to be a control target based on the specified content, and performs the control.