Reassessing the Benefits of Audiovisual Integration to Speech Perception and Intelligibility.

ABSTRACT:

Purpose

In difficult listening conditions, the visual system assists with speech perception through lipreading. Stimulus onset asynchrony (SOA) is used to investigate the interaction between the two modalities in speech perception. Previous estimates of audiovisual benefit and SOA integration period differ widely. A limitation of previous research is a lack of consideration of visemes-categories of phonemes defined by similar lip movements when produced by a speaker-to ensure that selected phonemes are visually distinct. This study aimed to reassess the benefits of audiovisual lipreading to speech perception when different viseme categories are selected as stimuli and presented in noise. The study also aimed to investigate the effects of SOA on these stimuli.

Method

Sixty pa

SUBMITTER: O'Hanlon B 

PROVIDER: S-EPMC11842087 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature