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Feng, S. (author), Zelasko, Piotr (author), Moro-Velázquez, Laureano (author), Scharenborg, O.E. (author)This paper tackles automatically discovering phone-like acoustic units (AUD) from unlabeled speech data. Past studies usually proposed single-step approaches. We propose a twostage approach: the first stage learns a subword-discriminative feature representation, and the second stage applies clustering to the learned representation and obtains...conference paper 2021