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KMID : 0917520000070040041
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Journal of Speech Sciences
2000 Volume.7 No. 4 p.41 ~ p.47
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Text-Prompt Speaker Verification using Variable Threshold and Sequential Decision
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Abstract
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This paper concerns an effective text-prompted speaker verification method to increase the performance of speaker verification. While various speaker verification methods have already been developed, their effectiveness has not yet been formally proven is terms of achieving an acceptable performance level. It is also noted that the traditional methods were focused primarily on single, prompted utterance for verificatin. This paper, instead, propose sequential decision method using variable threshold focused at handling two utterances for text-prompted speaker verification. Experimental results show that the purposed speaker verification method outperforms that of the speaker verification scheme without using the sequential decision by a factor of up to 3 times. From these results, we show that the proposed method is highly effective and achieves a reliable performance suitable for practical applications.
Keywords: speaker verification, user verification, speaker recognition, bio-metrics, sequential decision, text-prompt speaker verification
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