Disclosed is a voice recognition apparatus which can prevent an erroneous manipulation due to erroneous voice recognition from being carried out even in a noisy environment. As long as a duration of utterance acquired based on the level of a voice signal uttered by an operator (user) approximately coincides with a duration of utterance acquired based on mouth image data acquired by capturing the mouth of the operator, the voice recognition apparatus outputs vocal-manipulation phrase data as the result of voice recognition.