Author

N. Minematsu

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Preprint Sep 2026

Subphonetic Acoustic Modeling via Optimal Transport for Pronunciation Assessment

Pronunciation assessment requires acoustic evidence that is temporally precise, diagnostically meaningful, and faithful to the learner's actual production. However, existing acoustic models often struggle to provide recognition and segmentation evidence simultaneously. CTC-based phone recognizers can predict phone sequ...

Hao-Peng Geng, Jiun-Ting Li, Daisuke Saito et al. · 0 citations

Preprint Jul 2026

Self-supervised Speech Comparison for L2 Phone, Rhythm, and Intonation Scoring

L2 speech assessment has traditionally focused on phonetic assessment, leaving the scoring of suprasegmental features such as rhythm and intonation underexplored. Moreover, assessment methods often require training with labeled L2 speech data, making them difficult to apply in low-resource settings. We investigate whet...

Stephen McIntosh, Reuben Smit, D. Saito et al. · 0 citations