Listeners compensate for coarticulatory influences of one speech sound on another. We examined whether lipread information penetrates this perceptual compensation mechanism. Experiment 1 replicated that when an /as/ or /a / sound preceded a /ta/-/ka/ continuum, more velar stops were perceived in the context of /as/ ([1]). Experiments 2 and 3 investigated whether the same phoneme boundary shift would be obtained when the context was lipread instead of heard. An ambiguous sound between /as/ and /a / was dubbed on the video of a speaker articulating /as/ or /a /. Subjects relied on the lipread information when identifying the ambiguous fricative sound, but there was no boundary shift in the following /ta/-/ka/ continuum. These results indicate that biasing of the fricative and compensation for coarticulation can be dissociated.
Cite as: Vroomen, J., Gelder, B.d. (2000) Lipreading and the compensation for coarticulation mechanism. Proc. Spoken Word Access Processes (SWAP), 83-86
@inproceedings{vroomen00_swap,
author={Jean Vroomen and Beatrice de Gelder},
title={{Lipreading and the compensation for coarticulation mechanism}},
year=2000,
booktitle={Proc. Spoken Word Access Processes (SWAP)},
pages={83--86}
}