Investigation of learning trajectory of Mandarin for Tibetan speakers
Investigation of learning trajectory of Mandarin for Tibetan speakers
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DOI：
10.1109/apsipa.2015.7415505
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
Huixia Wang;J. Dang;Hui Feng;Hongcui Wang;Yang Yu;K. Honda
中科院分区：
文献类型：
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作者：
Huixia Wang;J. Dang;Hui Feng;Hongcui Wang;Yang Yu;K. Honda
当习得一种口语时，说话人的言语器官会适应发音方式和发音地点，从而形成特定的发音空间。对于第二语言学习，习得过程实质上是学习者通过克服母语的干扰，在发音和声学领域接近母语人士的标准语音的过程。基于这一观点，本研究通过测量二语学习者与母语者元音结构之间距离的变化来考察二语习得中的学习轨迹。使用拉普拉斯特征映射从大约7200个单词中构造了6个普通话元音的元音结构。每个元音被描述为一个向量，该向量具有其簇中心的相位和幅度以及其在元音结构中的标准差，而距离则由学习者和母语者向量的差异来定义。30名三个普通话水平的藏语学习者和10名母语为普通话的人参与了这项研究。结果表明：1)藏语普通话水平越高，其元音结构越接近本族语；2)除元音/o/外，6个普通话元音的学习轨迹呈单调趋势，即随着藏语普通话水平的提高，每个元音的学习距离减小。
When acquiring a spoken language, speakers adapt their speech organs to the articulatory manners and places and thus form a specific articulatory space. For second language (L2) learning, the acquisition process is essentially the one for the learners to approach the standard speech of native speakers in articulatory and acoustical domains by overcoming interferences from their first language. Based on this view, this study investigates learning trajectories in L2 acquisition by measuring the changes in the distance between vowel structures observed from L2 learners and the natives. The vowel structures were constructed for six Mandarin vowels from about 7,200 tokens using the Laplacian eigenmaps. Each vowel was described by a vector with the phase and amplitude of its cluster center and its standard deviation in the vowel structure, and the distance was defined by the difference of the vectors between the learners and the natives. 30 Tibetan Mandarin learners with three Mandarin proficiency levels and 10 Mandarin native speakers participated in this study. The results showed that: i) the higher the Mandarin proficiency of Tibetan speakers is, the closer the structure of their Mandarin vowels is to that of the natives, and ii) the learning trajectory of the six Mandarin vowels, except for vowel /o/, shows a monotonic tendency, that is, as the Tibetan speakers' Mandarin proficiency level increases, the distance reduces for each vowel.