Nippon Telegraph and Telephone Corporation

Tetsuo Amakasu

Masayuki Sugizaki

Takafumi Hikichi

Kaname Kasahara

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 () according to the present invention includes a first speech recognition unit () 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 () that determines a subject segment based on a result of the speech recognition processing by the first speech recognition unit, and a second speech recognition unit () 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.

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Tokyo, Japan

Tetsuo Amakasu