METHOD AND DEVICE FOR VERIFYING SPEAKER AUTHENTICATION, AND SPEAKER AUTHENTICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for verifying speaker authentication capable of verifying a speaker by a little data quantity and a calculation quantity.;SOLUTION: Test utterance including a password spoken by the speaker is inputted, and an acoustic characteristic vector train is extracted from input test utterance. A matching pass between a speaker template registered by a registered speaker and the acoustic characteristic vector train is determined. A matching score of the matching pass is calculated by taking into consideration a spectral change in the test utterance or a spectral change in a speaker template, and a matching score is compared with a predefined identification threshold to determine whether or not the test utterance is utterance including the password spoken by the registered speaker.;COPYRIGHT: (C)2009,JPO&INPIT