Vietnamese speakers' mispronunciation of Japanese singleton and geminate stops

Vietnamese speakers' mispronunciations of Japanese singleton and geminate stops were identified using the category boundary pronounced by native speakers. To clarify characteristics mispronunciations, their speech segment durations analyzed. In comparison with correct pronunciations, speakers mispronounced a stop longer closure shorter preceding consonant-vowel segment, whereas they following segment. These results consistent findings Korean, Taiwanese Mandarin, Thai in previous studies, suggesting that non-native may have common tendency to inadequate anteroposterior segments stops.