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Developing a Chinese L2 speech database of Japanese learners with narrow-phonetic labels for computer assisted pronunciation training

For the purpose of developing Computer Assisted Pronunciation Training (CAPT) technology with more informative feedbacks, we propose to use a set of narrow-phonetic labels to annotate Chinese L2 speech database of Japanese learners. The labels include basic units of “Initials”, “Finals” for Chinese phonemes and diacritics for erroneous articulation tendencies. Pilot investigations were made on the annotating consistency of two sets of phonetic transcriptions in 17 speakers’ data. The results indicate the consistency is moderately good, suggesting that the annotating procedure be practical, and there is also a room for further improvement.