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Lipreading and audio-visual speech perception.

Q Summerfield1

  • 1MRC Institute of Hearing Research, University Park, Nottingham, U.K.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|January 29, 1992
PubMed
Summary

This review explores lipreading and audio-visual speech perception, examining factors influencing lipreader skill, the impact of signal delays, and visual cues for speech sounds. It also discusses how auditory and visual speech information are integrated.

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Area of Science:

  • Psychology
  • Speech Perception
  • Audiovisual Communication

Background:

  • Lipreading and audiovisual speech perception are complex cognitive processes.
  • Understanding the interplay between auditory and visual speech cues is crucial for communication.

Purpose of the Study:

  • To review advancements in the psychology of lipreading.
  • To explore the factors distinguishing skilled lipreaders from less skilled ones.
  • To examine the process of audio-visual integration in speech perception.

Main Methods:

  • Literature review of existing research on lipreading and audiovisual speech perception.
  • Analysis of studies investigating the effects of temporal delays between auditory and visual speech signals.
  • Examination of research utilizing computer-generated talking face animations.

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Main Results:

  • Identified key factors differentiating effective lipreaders.
  • Demonstrated the significant impact of introducing delays between auditory and visual speech signals.
  • Highlighted the contribution of computer animations in elucidating visual cues for phoneme discrimination.
  • Provided insights into the mechanisms of audio-visual speech information integration.

Conclusions:

  • Progress has been made in understanding the psychological underpinnings of lipreading and audiovisual speech perception.
  • Further research is needed to fully elucidate the complex integration processes involved.
  • The study underscores the importance of both auditory and visual information in speech perception.