Phoneme modeling units design for Mandarin LVCSR systems
Qingfeng Liu · Journal of Tsinghua University(Science and Technology) · 2011
Modeling units can be used to describe the salient acoustic and phonetic information for a language in speech recognition systems.Thus,they play a very important role in the system.This paper describes a phoneme set using several modeling units,which has good performance in large vocabulary continuous speech recognition(LVCSR) systems.A question set design method is given based on the extended vowel triangle.Tests show that the combination of the new phoneme set and the new question set surpasses the initial/final in performance.Also,the number of modeling units is greatly reduced which is more convenient for processing succeeding system modules.