METHOD AND APPARATUS FOR VERIFICATION OF SPEAKER AUTHENTIFICATION AND SYSTEM FOR SPEAKER AUTHENTICATION
First Claim
1. A method for verification of speaker authentication, comprising:
- inputting a test utterance containing a password that is spoken by a speaker;
extracting an acoustic feature vector sequence from said inputted test utterance;
obtaining a matching path between said extracted acoustic feature vector sequence and a speaker template enrolled by an enrolled speaker;
calculating a matching score of said obtained matching path upon considering spectral change of said test utterance and/or spectral change of said speaker template; and
comparing said matching score with a predefined discriminating threshold to determine whether said inputted test utterance is an utterance containing a password spoken by the enrolled speaker.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for verification of speaker authentication comprises inputting a test utterance containing a password that is spoken by a speaker, extracting an acoustic feature vector sequence from the inputted test utterance, obtaining a matching path between the extracted acoustic feature vector sequence and a speaker template enrolled by an enrolled speaker, calculating a matching score of the obtained matching path upon considering spectral change of the test utterance and/or spectral change of the speaker template, and comparing the matching score with a predefined discriminating threshold to determine whether the inputted test utterance is an utterance containing a password spoken by the enrolled speaker.
40 Citations
35 Claims
-
1. A method for verification of speaker authentication, comprising:
-
inputting a test utterance containing a password that is spoken by a speaker; extracting an acoustic feature vector sequence from said inputted test utterance; obtaining a matching path between said extracted acoustic feature vector sequence and a speaker template enrolled by an enrolled speaker; calculating a matching score of said obtained matching path upon considering spectral change of said test utterance and/or spectral change of said speaker template; and comparing said matching score with a predefined discriminating threshold to determine whether said inputted test utterance is an utterance containing a password spoken by the enrolled speaker.
-
-
2. A method for verification of speaker authentication, comprising:
-
inputting a test utterance containing a password that is spoken by a speaker; extracting an acoustic feature vector sequence from said inputted test utterance; obtaining a matching path between said extracted acoustic feature vector sequence and a speaker template enrolled by an enrolled speaker upon considering spectral change of said test utterance and/or spectral change of said speaker template; calculating a matching score of said obtained matching path; and comparing said matching score with a predefined discriminating threshold to determine whether said inputted test utterance is an utterance containing a password spoken by the enrolled speaker.
-
-
3. A apparatus for verification of speaker authentication, comprising:
-
a test utterance inputting unit configured to input a test utterance containing a password that is spoken by a speaker; an acoustic feature vector sequence extractor configured to extract an acoustic feature vector sequence from said inputted test utterance; a matching path obtaining unit configured to obtain a matching path between said extracted acoustic feature vector sequence and a speaker template enrolled by an enrolled speaker; a matching score calculator configured to calculate a matching score of said obtained matching path upon considering spectral change of said test utterance and/or spectral change of said speaker template; and a comparing unit configured to compare said matching score with a predefined discriminating threshold to determine whether said inputted test utterance is an utterance containing a password spoken by the enrolled speaker. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An apparatus for verification of speaker authentication, comprising:
-
a test utterance inputting unit configured to input a test utterance containing a password that is spoken by a speaker; an acoustic feature vector sequence extractor configured to extract an acoustic feature vector sequence from said inputted test utterance; a matching path obtaining unit configured to obtain a matching path between said extracted acoustic feature vector sequence and a speaker template enrolled by an enrolled speaker upon considering spectral change of said test utterance and/or spectral change of said speaker template; a matching score calculator configured to calculate a matching score of said obtained matching path; and a comparing unit configured to compare said matching score with a predefined discriminating threshold to determine whether said inputted test utterance is an utterance containing a password spoken by the enrolled speaker. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
Specification