Title: Immediate ambiguity resolution in speech perception based on prior acoustic experience
Abstract: Speech perception relies on the rapid resolution of uncertainty. Here we explore whether auditory experiences contribute to this process of ambiguity resolution. ~8000 participants were surveyed online for their (i) subjective percept of a speech stimulus with ambiguous formant allocation; (ii) demographic profile and auditory experiences. Both linguistic and non-linguistic auditory experiences significantly predict speech perception. Listeners were more likely to perceive the ambiguous stimulus in accordance with their own name, and were biased towards lower formant allocation as a function of being exposed to lower auditory frequencies in their environment. Overall, our results show that the subjective interpretation of an ambiguous stimulus in the auditory domain is determined by prior acoustic exposure, suggesting the operation of an exposure-dependent mechanism impacting sensitivity that resolves ambiguity in speech perception.