Phoneme Sequence Extraction of Learner’s Pronunciation Errors for Foreign Language Learning

This paper presents a method for extracting phoneme sequences in foreign language pronunciation learning that a learner is likely to mispronounce. Some conventional methods show a learner’s phoneme errors using speech recognition technology. Those systems simply show only one phoneme error that the learner makes; they show no analytical results of phoneme errors that arise from previous or later phoneme sequences. A feature of the proposed method is the ability to extract a phoneme that a learner is likely to mispronounce as an n-gram sequence rather than a single phoneme. We confirm the feasibility of our method with several experiments using a prototype of our learning system.