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Related Concept Videos

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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Developmental factors and the non-native speaker effect in auditory-visual speech perception.

Yuchun Chen1, Valerie Hazan

  • 1Department of Human Communication Science, UCL, Gower Street, London, United Kingdom. yuchun.m.chen@gmail.com

The Journal of the Acoustical Society of America
|July 31, 2009
PubMed
Summary

Adults use more visual information than children in audiovisual speech perception, regardless of language. Speechreading ability influences visual information use, with a non-native speaker effect observed in English participants.

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Area of Science:

  • Psycholinguistics
  • Developmental Psychology
  • Speech Perception

Background:

  • Audiovisual speech perception integrates auditory and visual cues.
  • Developmental and linguistic factors can influence the reliance on visual information during speech perception.

Purpose of the Study:

  • To investigate how age and language background affect the use of visual information in audiovisual speech perception.
  • To explore the relationship between speechreading ability and visual information use.
  • To examine potential language-specific effects in audiovisual speech processing.

Main Methods:

  • Participants included Mandarin-Chinese and English adults and children (8-9 years old).
  • A syllable identification task used /ba/, /da/, /ga/ stimuli from native and non-native speakers in clear and noisy conditions.
  • Conditions included auditory-only, visual-only, and audiovisual (congruent/incongruent).

Main Results:

  • Adults showed greater use of visual information than children across both language groups.
  • Speechreading performance positively correlated with the total visual effect.
  • Chinese perceivers utilized visual information similarly to English perceivers; a non-native speaker effect was found only in English participants.

Conclusions:

  • Visual information use in speech perception develops with age, linked to speechreading proficiency.
  • Language background does not significantly alter the extent of visual information use.
  • Speaker's visual appearance and language-specific acoustic-phonetic properties are crucial for cross-language audiovisual speech studies.