J4 ›› 2014, Vol. 36 ›› Issue (10): 2009-2013.
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LI Guanyu,YU Hongzhi,WU Zhiqiang
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Abstract:
Phoneme segmentation is often necessary in research of Tibetan TTS or phonetics.Artificial segmentation is a hard job and timeconsuming.The acoustic model of Tibetan language is not precise or robust enough because of resourcedeficiency.Therefore, it is not precise enough when the method of autosegmentation is adopted.Lhasa dialect of Tibetan is chosen as the study object.Phone set and dictionary of Tibetan are established.Common phones are obtained on the basis of distance between phone models. GMMHMM models of English and Lhasa Tibetan are fused.Silences and short pauses are autojudged.Words network is established and then expanded to be a models (or monophones) network.All frames of parameters are segmented and aligned to sates of models by using Viterbi algorithm.Experiments demonstrate that phones are segmented and the result is better than the method of using pure Tibetan models.
Key words: Tibetan;Lhasa dialect;automatic phoneme segmentation;Viterbi;HMM
LI Guanyu,YU Hongzhi,WU Zhiqiang. An automatic phoneme segmentation method in continuous Tibetan language under the condition of resourcedeficiency [J]. J4, 2014, 36(10): 2009-2013.
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