Prosodic prominence effects in the processing of spectral cues

Two experiments test how phrasal prominence influences listeners' perception of vowel contrasts and how prominence information and vowel formant cues are integrated in processing. Experiment 1 finds that listeners incorporate phrasal prominence in their perception of vowels, in line with how spectral structure is modulated by prominence in speech. Experiment 2 explores how prominence information is integrated with formant cues in a visual world eyetracking task. Prominence shows an overall later influence in processing in line with current models of prosodic and segmental integration. However, listeners' perception of formants was also impacted more subtly by prominence immediately in processing such that prominence information directly shapes how formant cues are perceived. Results are discussed in terms of their implications for models of prosodic effects in segmental perception and possible differences between prosodic prominence and prosodic boundaries in this regard.