Title
Nonnative Speech Recognition Based on Bilingual Model Modification at State Level.
Abstract
This paper presents a novel bilingual model modification approach to improve normative speech recognition accuracy when the variations of accented pronunciations occur. Each state of baseline normative acoustic model is modified with several candidate states from the auxiliary acoustic model, which is trained on speakers' mother language. State mapping criterion and n-best candidates are investigated, and different numbers of Gaussian mixture's of the auxiliary acoustic model are compared based on a grammar-constrained speech recognition system. Using this bilingual model modification approach, compared to the normative acoustic model which has already been well trained by adaptation technique MAP, the Phrase Error Rate further achieves a 5.83% relative reduction, while only a small relative increase on Real Time Factor occurs.
Year
DOI
Venue
2009
10.1007/978-3-642-01216-7_32
SIXTH INTERNATIONAL SYMPOSIUM ON NEURAL NETWORKS (ISNN 2009)
DocType
Volume
ISSN
Conference
56
1867-5662
Citations 
PageRank 
References 
0
0.34
3
Authors
4
Name
Order
Citations
PageRank
Qingqing Zhang110214.76
Jielin Pan24418.04
Shui-duen Chan351.57
Yonghong Yan4656114.13