At a miss probability of 5%, the hybrid approach using UBM and T-cohort models reduce the false alarm rate to 0.5% compared to 2% for the baseline.

• 当错误拒绝率为5%25时；该方法可以获得0.；5%25的错误接受率；远远低于采用通用背景模型归一化方法的2%25。