日本語話者の英語発話における音素の逸脱 : AESOPコーパス『北風と太陽』の分析から(<特集>アジアにおけるコーパス・データ駆動型音声研究)

抄録

This paper describes the Asian English Speech cOrpus Project (AESOP), its aims, data collection platform, and auto-annotation method. It also describes the phonemic variation in Japanese speakers' reading of The North Wind and the Sun of the Corpus in relation to the English fluency levels of the Japanese speakers. The results showed that the main segmental difference in pronunciation between Japanese speakers and model native English speakers was vowels. Japanese speakers produced more variants of vowel phonemes; vowel reduction in unstressed syllables did not occur in most speakers' utterances. There was also an influence of Japanese syllable structure in Japanese speakers' English utterances; there were many instances of vowel epenthesis to break up consonant clusters, but there were very few examples of vowel deletion and consonant insertion.