Formalising phonological perception: The role of voicing assimilation in consonant cluster perception in Emilian dialects

Speech perception is influenced by language-specific phonological knowledge. While phonotactics has long been established to play a role, the study of how phonological alternations influence perception is still in its infancy. In this paper, we make a case for the latter by investigating the role of regressive voicing assimilation (RVA) in the perception of obstruent clusters in Emilian dialects of Italian. We provide empirical evidence from a phoneme-detection task, in which Emilian listeners reported to have heard [b] significantly more often in stimuli with a /p/ before a voiced obstruent (RVA context) than before a vowel (non-RVA context). Our experimental findings add to recent work on the influence of phonology on speech perception. In addition, we provide an explicit formalisation, which bolsters the need for a rigid distinction between phonetic, surface and underlying representation, and an explicit mapping between all three, both in the process of speech production and comprehension.