ASR-based pronunciation training: scoring accuracy and pedagogical effectiveness of a system for dutch L2 learners

A system for providing Computer Assisted Pronunciation Training for Dutch was developed, Dutch-CAPT, which appeared to be effective in improving pronunciation quality of L2 learners of Dutch. In this paper we describe the architecture of the system paying particular attention to the rationale behind this system, to the performance of the error detection algorithm and its relationship to the pedagogical effectiveness of the corrective feedback provided. Index Terms: Computer Assisted Pronunciation Training (CAPT), corrective feedback, pronunciation error detection, Goodness Of Pronunciation (GOP)