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Updated: May 1, 2026
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Published on: November 26, 2012
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Speech compensation for time-scale-modified auditory feedback
Summary
This study reveals how speech adapts to altered auditory feedback. Speakers primarily adjust vocal tract speed (VF1) to compensate for changes in sound timing, demonstrating a key aspect of speech motor control.
Area of Science:
- Speech production and perception
- Auditory feedback mechanisms
- Acoustic phonetics
Background:
- Auditory feedback is crucial for speech motor control.
- Time-scale modification of auditory feedback can alter speech.
- Understanding compensatory mechanisms is key to speech science.
Purpose of the Study:
- To investigate speech compensation strategies in response to time-scale-modified auditory feedback.
- To analyze adjustments in acoustic features during semivowel transitions.
- To explore the relationship between auditory perturbation and speech adaptation.
Main Methods:
- Participants produced target utterances (/ija/) under normal and time-scale-modified auditory feedback conditions.
- Acoustic analysis focused on maximum velocities of F1 and F2 trajectories (VF1, VF2) and F1-F2 onset time difference (TD).
- A syllable perception test assessed the impact of altered feedback on phonemic categorization.
Main Results:
- Speech compensation was evident in VF1, VF2, and TD.
- Compensation magnitudes for VF1 and TD increased with the degree of time-scale perturbation.
- Increased phonemic perception change correlated with greater speech compensation.
Conclusions:
- Speech compensation for altered auditory feedback is primarily achieved by modifying VF1, with secondary adjustments in VF2 and TD.
- Compensation is triggered by the detection of speed changes in auditory feedback, followed by phonemic categorical changes.
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