6. The device according to claim 1 , wherein the processing circuitry is further configured to input a text corresponding to the first speech data, and the processing circuitry is configured to consider speech data obtained by uttering of the received text as the first speech data, to determine whether or not the speaker of the first speech data is the same as the speaker of the second speech data.
1. A speech synthesis dictionary creating device comprising: a processing circuitry coupled to a memory, the processing circuitry being configured to: receive input of first speech data; select at least one text from texts stored in the memory; present the selected text for a user to recognize and utter the selected text; receive input of second speech data which is considered to be speech data obtained by uttering of the presented text; and create a speech synthesis dictionary using the first speech data and using a text corresponding to the first speech data upon determining that a speaker of the first speech data is the same as a speaker of the second speech data.