| Tóm tắt: | According to many works on English phonology, word-final alveolar consonants – and only alveolar consonants – assimilate to following word-initial consonants, e.g. ran quickly → ra[ŋ] quickly. Some phonologists explain the readiness of alveolar consonants to assimilate (vs. the resistance of velar and labial articulations) by proposing that they have underspecified place of articulation (e.g. Avery & Rice 1989). Labial or dorsal nasals do not undergo assimilation because their PLACE nodes are specified. There are reports that velar and labial consonants sometimes assimilate in English, but these are anecdotal observations, with no available audio and no statistics on their occurrence. We find evidence of assimilation of labial and velar nasals in the Audio British National Corpus, motivating a new, quantitative phonological framework: a statistical model of underspecification and variation which captures typical as well as less common but systematic patterns seen in non-coronal assimilation.
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