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Updated: Jun 10, 2025
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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
Published on: September 27, 2024
407
Contrastive adaptation effects along a voice-nonvoice continuum.
1Department of Psychology, University of Minnesota, Twin Cities.
Journal of Experimental Psychology. General
|October 15, 2024
Summary
Auditory adaptation shows contrast effects between voice and instrument sounds. This perception research reveals how the brain distinguishes between human speech and musical instruments, even with similar acoustic features.
Area of Science:
- Auditory perception
- Cross-modal adaptation
- Psychoacoustics
Background:
- Perceptual adaptation is crucial for processing environmental stimuli across senses.
- Contrastive adaptation effects are known within voice and instrument sound categories.
- The study explores adaptation effects between voice and non-voice (instrument) sound categories.
Purpose of the Study:
- To investigate cross-category contrastive adaptation between human voice and musical instrument sounds.
- To determine if adaptation effects occur between distinct auditory categories.
- To explore the role of acoustic features and binaural processing in voice-instrument adaptation.
Main Methods:
- Generated 10-step continua between voice vowels (/a/, /o/, /u/) and instrument sounds (bassoon, horn, viola).
- Presented voice or instrument adaptors followed by target sounds from the continuum.
- Tested adaptation effects with same-ear vs. different-ear presentations and blocked adaptor types.
Main Results:
- Strong contrastive adaptation observed: instrumental adaptors shifted perception towards voice, and voice adaptors shifted perception towards instrument.
- No significant adaptation effects were found for visual stimuli, confirming auditory specificity.
- Adaptation effects were present for both same-ear and different-ear presentations, indicating central processing.
Conclusions:
- Cross-category contrastive adaptation occurs between voice and instrument sounds.
- This finding suggests that the auditory system can adapt across distinct sound categories, not just within them.
- Voice-nonvoice contrast opens new avenues for studying neural voice selectivity while controlling acoustic variables.
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