SPEECH RECOGNITION DEVICE, SEARCH DEVICE, SPEECH RECOGNITION METHOD, SEARCH METHOD, AND PROGRAM

It is intended to acquire a highly accurate speech recognition result for a subject of a conversation, while inhibiting an increase in the amount of calculation. A speech recognition device (10) according to the present invention includes a first speech recognition unit (11) that performs speech recognition processing using a first method on speech data of a conversation made by a plurality of speakers and outputs a speech recognition result for each of respective uttered speech segments of the plurality of speakers, a determination unit (13) that determines a subject segment based on a result of the speech recognition processing by the first speech recognition unit 11, and a second speech recognition unit (14) that performs speech recognition processing using a second method higher in accuracy than the first method on the speech data in the segment determined to be the subject segment and outputs a speech recognition result as a subject text.