VOICE AUTHENTICATION DEVICE, VOICE AUTHENTICATION SYSTEM, AND VOICE AUTHENTICATION METHOD

摘要

There is provided a voice authentication device capable of authenticating a communication partner of a communication terminal device by the received voice and preventing communication with a malicious person. In this device, when a user specification input unit (201) is key-operated to specify a communication partner, a user specification signal is outputted to a voice data sample storage unit (202). In a communication unit (205), a reception voice signal received from a mobile telephone device (100) is outputted to a voice correlation unit (203). In the voice data sample storage unit (202), corresponding voice sample data is read out according to the user specification signal inputted from the user specification input unit (201) and outputted as the sample signal to the voice correlation unit (203). In the voice correlation unit (203), the sample signal inputted from the voice data sample storage unit (202) is correlated with the reception voice signal inputted from the communication unit (205). The correlation result is outputted as a correlation result signal to a display unit (204).