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Related Experiment Videos

The specificity of perceptual learning in speech processing.

Frank Eisner1, James M McQueen

  • 1Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands. frank.eisner@mpi.nl

Perception & Psychophysics
|June 24, 2005
PubMed
Summary

Listeners adapt to unusual speech sounds, like ambiguous fricatives, based on exposure. This perceptual learning is specific to the individual talker and the sound segment, influencing speech perception.

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Area of Science:

  • Psycholinguistics
  • Auditory Perception
  • Speech Processing

Background:

  • Listeners adapt their speech perception based on exposure to non-standard speech sounds.
  • The specificity of this perceptual learning, particularly regarding talker and sound segment, remains an area of investigation.

Purpose of the Study:

  • To investigate the specificity of perceptual adjustments to unusual speech sounds.
  • To determine if perceptual learning is talker-specific and applied at a segmental level.

Main Methods:

  • Four experiments exposed Dutch listeners to an ambiguous fricative ([?] between [f] and [s]) in biased lexical contexts.
  • Listeners categorized sounds on an [epsilonf]-[epsilons] continuum after exposure.
  • Continuum stimuli varied in talker identity and speech segment origin.

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Main Results:

  • Listeners exposed to [f]-biased contexts showed a stronger [f] percept than those with [s]-biased exposure.
  • This effect persisted when stimuli were from novel talkers but not when the entire continuum was novel.
  • Exposure effects were observed when novel talker sounds were integrated into the exposure talker's speech.

Conclusions:

  • Perceptual learning of idiosyncratic speech is applied at the segmental level.
  • Under the tested exposure conditions, this learning is talker-specific.