A probabilistic union model for sub-band based robust speech recognition

被引:0
|
作者
Ming, J [1 ]
Smith, FJ [1 ]
机构
[1] Queens Univ Belfast, Sch Comp Sci, Belfast BT7 1NN, Antrim, North Ireland
关键词
D O I
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中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
A new statistical model is proposed for combining sub-band observations for robust speech recognition. This model characterizes the randomly corrupted sub-bands based on the union of random events. The new model has been incorporated into a hidden Markov model (HMM) and tested for recognizing a speaker-independent E-set, corrupted by various types of frequency-selective noise with unknown, time-varying statistics. The results show that the new model offers robustness to partial frequency corruption, requiring little or no knowledge about the noise characteristics.
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页码:1787 / 1790
页数:4
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