A voice recognition part performs voice recognition on a voice data and generates a first text which is a text indicating an utterance content. A text acquisition part acquires a second text which is a text indicating an utterance content according to an operation. A display processing part moves a position of a display text displayed on a display part, displays a text of at least one of the first text and the second text as a display text in a free region generated by the movement, and when fixing of a display position of the second text is instructed according to an operation, fixes the second text as a fixed text at a predetermined display position and displays the second text on the display part.