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Temporal control and compensation for perturbed voicing feedback.

Takashi Mitsuya1, Ewen N MacDonald2, Kevin G Munhall3

  • 1School of Communication Sciences and Disorders and National Centre for Audiology, University of Western Ontario, Elborn College, Room 1207, London, Ontario, N6G 1H1, Canada.

The Journal of the Acoustical Society of America
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Summary
This summary is machine-generated.

This study shows that speakers adjust their speech timing when auditory feedback manipulates voicing information, demonstrating speech motor control adapts to phonation timing cues.

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Area of Science:

  • Speech Production
  • Auditory Feedback
  • Motor Control

Background:

  • Talkers monitor speech attributes like fundamental frequency, vowel formants, and fricative noise.
  • Auditory perturbation studies reveal insights into speech motor control mechanisms.
  • Vocal tract spectral information is often manipulated, but other parameters like phonation timing may also be monitored.

Purpose of the Study:

  • To investigate if speakers exhibit compensatory behavior when voicing information is manipulated via auditory feedback.
  • To determine if the speech feedback system monitors phonation timing.

Main Methods:

  • Utilized a real-time auditory perturbation paradigm.
  • Manipulated auditory feedback of voicing by presenting the cognate of the intended sound (e.g., hearing "dipper" when saying "tipper").
  • Measured changes in voice onset time and subsequent vowel acoustics.

Main Results:

  • Talkers demonstrated compensatory adjustments in voice onset time when voicing feedback was perturbed.
  • In some instances, changes in the following vowel were also observed.
  • This suggests sensitivity to phonation timing cues in speech production.

Conclusions:

  • The speech motor control system monitors and adjusts to perturbations in voicing information.
  • Phonation timing is a relevant parameter for auditory feedback-based speech regulation.
  • These findings expand our understanding of how auditory feedback shapes speech production.