SPEECH RECOGNITION SYSTEM, SPEECH RECOGNITION DEVICE, SPEECH RECOGNITION METHOD, AND CONTROL PROGRAM

A voice recognition device capable of highly accurate voice recognition is provided. The voice recognition device includes a storage, a voice recognizer, and a reject information generator. The storage stores reject information for use in specifying a voice. The voice recognizer recognizes an input voice as a target word while defining, as one of conditions, a fact that a degree of likelihood between a voice specified by the reject information and the input voice is lower than a predetermined threshold value. In case where the voice recognizer has recognized the input voice as the target word in a predetermined state, the reject information generator determines the reject information, based on the input voice, and stores the reject information in the storage.