A CALL system for teaching the duration and phone quality of Japanese tokushuhaku

Abstract

A CALL (computer-aided language learning) system was developed to teach the pronunciation of Japanese tokushuhaku (long vowels, [he mora nasal and mora obstruents) to beginning-level learners whose native language is American English. Nonnatives often produce tokushuhaku with incorrect phone duration or quality. The proposed system (a) detects mistakes in phone duration and quality,~) returns an intelligibility score that tells the learner the likeli

Computer Aided Pronunciation Learning for Al-Jabari Method: A Review

“…From the study made by (Kawai, 1999), CALL system has been introduced mainly to teach the pronunciation of a second language. Three areas of pronunciation skills have been addressed: phone quality, phone duration and pitch.…”

An online pronunciation training support system designed for Japanese learners of English

“…Some of the systems indeed were able to interact with users, but just with simple indicative graphs or scores to tell users whether their input sound is good or not, without any details of why their pronunciation or intonation was good or not good. Some other systems did not use ASR (Automatic Speech Recognition) technologies, but relied too much on speech signal processing techniques [5]. These systems may work with some individual sounds and short words, but the feedback offered for the students were just abstract waveforms and graphs which were not easy to understand [6].…”