10. The speech recognition device according to claim 9 , wherein when the speech continuation time is longer than a predetermined length, the determiner increases weights by which a second likelihood, indicating a likelihood of the second speech recognition result information, and a third likelihood, indicating a likelihood of the third speech recognition result information, are multiplied, compared to weights, by which a first likelihood, indicating a likelihood of the first speech recognition result information, and a fourth likelihood, indicating a likelihood of the fourth speech recognition result information, are multiplied.
11. The speech recognition device according to claim 10 , wherein when the speech continuation time is longer than the predetermined length, the determiner increases the weight by which the second likelihood is multiplied compared to the weight by which the third likelihood is multiplied.