How have successful Vietnamese learners acquired fluency in Japanese pronunciation?

越南日语学习者的日语发音困难不仅存在于音段层面，也存在于超音段/韵律层面。例如，每个元音和辅音的发音，来自越南语音调的干扰，喉部的发音紧张，以及短/长莫拉的实现。在本研究项目中，我们进行了一个感知实验的水平或程度的清晰度的学习者的日语为母语的人。我们还对越南语“好学习者”的学习历史进行了调查，以探讨更有效的日语语音学习方法。

The difficulties of Japanese pronunciation for Vietnamese learners of Japanese are found not only at the segmental level but also at the suprasegmental/prosodic level. For example, the articulation of each vowel and consonant, interference from tones in Vietnamese, articulatory tension in the larynx, and the realization of short/long mora. In this research project, we carried out a perception experiment on the level or degree of clarity of the learners’ pronunciation by native Japanese speakers. We also conducted a survey on the learning history of Vietnamese “goo d learners” to discuss a more effective learning method of Japanese pronunciation.