| 摘要 |
A user authentication device to authenticate a user by voice recognition includes: an operating unit for performing authentication by comparing a audio signal input for voice recognition with voice information of an authorized user; a noise output unit to combine a noise signal with the input audio signal; and a noise cancellation unit to combine a negative noise signal corresponding to the noise signal with the audio signal with the noise signal, and to provide the mixed signal to the operating unit. Accordingly, by using the noise signal as an encryption signal, the security of user authentication using voice recognition may be improved. |
