| 摘要 |
A speech translation device includes a speech input unit, a speech recognition unit, a machine translation unit, a parameter setting unit, a speech synthesis unit, and a speech output unit, and a speech volume value of speech data to be outputted is determined from plural likelihoods obtained by the speech recognition/machine translation. With respect to a word with a low likelihood, the speech volume value is made small and is made hard to transmit to the user, and on the other hand, with respect to a word with a high likelihood, the speech volume value is made large and is especially emphasized and is transmitted to the user.
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