TOEFL iBT® Test Security: Voice Biometrics

TOEFL iBT® Test Security: Voice Biometrics https://migrationalliance.com.au/immigration-daily-news/entry/2017-01-using-voice-biometrics-for-toefl-ibt-test-security.html

TOEFL iBT® Test Security: Voice Biometrics Every fingerprint is different, just like every voice is. This is why ETS makes use of voice recordings from the TOEFL iBT® test’s speaking section to help make sure that the takers of the test are not misrepresenging themselves.

These voice recordings are then compared by making use of voice biometrics, a technology which uses techniques for statistical pattern-making, as well as advanced voice classification methods and inputs from a number of systems to compare samples of speech from those who take the test.

There are 3 ways in which voice biometrics is used to identify potential misconduct in testing.

• For Repeat Test Takers – So that voice prints can be compared with speech samples from the same test taker using a number of test administrations. If the voiceprints are different, then that is the time to investigate.
• For those who can potentially impersonate within a Test Center – So that voiceprints can be compared with speech samples for all test takers at a specific test center. If there are any voiceprints that would match, then that is the time to investigate.
• For those who are known to impersonate within a Group – So that voiceprints can be compared with speech samples from known imposters for all test takers within a suspect group. If there are any voiceprints that would match, then that is the time to investigate.

It was in 2012 when voice biometrics was introduced for the TOEFL® test security investigations. It is now being used on all test takers all over the world before the release of scores.

Please visit https://www.ets.org/toefl/institutions/about/security/ for more information regarding the TOEFL test security.