September 22-25, 1997
Traditionally, speaker authentication has focused on two categories of techniques: speaker verification and speaker identification. In this paper, we introduce a third category called verbal information verification (VIV) in which a claimed speaker's utterances are verified against the key information in the speaker's registered profile to decide whether the claimed identity should be accepted or rejected. The proposed VIV technique can be used independently or combined with the traditional speaker verification techniques to achieve flexible and improved speaker authentication. Instead of accomplishing VIV through recognizing the key information, the proposed VIV algorithm is based on the concept of sequential utterance verification. In a telephone speaker authentication experiment on 100 speakers and using three pass-utterances in response to three categories of questions, the proposed VIV system achieved 0.00% equal-error rate, compared to 30% false rejection rate on an automatic speech recognition approach.
Bibliographic reference. Li, Qi / Juang, Biing-Hwang / Zhou, Qiru / Lee, Chin-Hui (1997): "Verbal information verification", In EUROSPEECH-1997, 839-842.