Specific acoustic properties meaningfully shape the perceptual system’s
binding of sight and sound (Vatakis & Spence, 2007, 2008). One understudied
acoustic property in cross-modal integration is amplitude envelope, the way
in which a sounds loudness changes over time. Here we examine the effect of
amplitude envelope (flat versus percussive) on binding. Participants
completed a temporal order judgement (TOJ) task, indicating which sensory
modality was presented first. We hypothesized better binding for percussive
envelope natural sounds compared to flat pure tones. Our preliminary
results show a larger binding window for natural percussive tones. Further
research into the role of timbre, temporal variation, and movement in
cross-modal integration will help further our understanding on binding of
natural stimuli