Voiceprint Verification Based on Two-Level Decision HMM-UBM

Voiceprint recognition is a new technology of biology authentication, and the most important task of it is to reduce both the false rejection rate (FRR) and false acceptation rate (FAR). To build a highly reliable voiceprint recognition system, this paper proposes three novel methods: two-level decision based on HMM-UBM, Model Distance and Dynamic Threshold. The evaluation results demonstrated that our methods had good performance.