Lipreading and the Compensation for Coarticulation Mechanism

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Abstract

Listeners compensate for coarticulatory influences of one speech sound on another. We examined whether lipread information penetrates this perceptual compensation mechanism. Experiment 1 replicated the finding that when an /as/ or /a/ sound preceded a /ta/-/ka/ continuum, more velar stops were perceived in the context of /as/. 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 as /s/ or //, but there was no corresponding boundary shift in the following /ta/-/ka/ continuum. These results indicate that biasing of the fricative by lipread information and compensation for coarticulation can be dissociated.
Original languageEnglish
Pages (from-to)661-672
JournalLanguage, Cognition and Neuroscience
Volume16
Issue number5
Publication statusPublished - 2001

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Lipreading
Phonetics
experiment
listener
video
Coarticulation
Sound
Experiment
Fricatives

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title = "Lipreading and the Compensation for Coarticulation Mechanism",
abstract = "Listeners compensate for coarticulatory influences of one speech sound on another. We examined whether lipread information penetrates this perceptual compensation mechanism. Experiment 1 replicated the finding that when an /as/ or /a/ sound preceded a /ta/-/ka/ continuum, more velar stops were perceived in the context of /as/. 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 as /s/ or //, but there was no corresponding boundary shift in the following /ta/-/ka/ continuum. These results indicate that biasing of the fricative by lipread information and compensation for coarticulation can be dissociated.",
author = "J. Vroomen and {de Gelder}, B.",
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language = "English",
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}

Lipreading and the Compensation for Coarticulation Mechanism. / Vroomen, J.; de Gelder, B.

In: Language, Cognition and Neuroscience, Vol. 16, No. 5, 2001, p. 661-672.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Vroomen, J.

AU - de Gelder, B.

PY - 2001

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AB - Listeners compensate for coarticulatory influences of one speech sound on another. We examined whether lipread information penetrates this perceptual compensation mechanism. Experiment 1 replicated the finding that when an /as/ or /a/ sound preceded a /ta/-/ka/ continuum, more velar stops were perceived in the context of /as/. 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 as /s/ or //, but there was no corresponding boundary shift in the following /ta/-/ka/ continuum. These results indicate that biasing of the fricative by lipread information and compensation for coarticulation can be dissociated.

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