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Updated: Aug 16, 2026
14:05
Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
Published on: January 23, 2017
Vowel perception by noise masked normal-hearing young adults
Carolyn Richie1, Diane Kewley-Port, Maureen Coughlin
1Department of Speech and Hearing Sciences, Indiana University, Bloomington, Indiana 47405, USA. crichie@butler.edu
The Journal of the Acoustical Society of America
|September 15, 2005
Summary
Young normal-hearing adults simulating hearing loss performed similarly to young hearing-impaired adults on vowel perception tasks. Audibility, not hearing status, appears to be the key factor in vowel discrimination.
Area of Science:
- Audiology
- Speech Perception
- Psychoacoustics
Background:
- Sensorineural hearing loss impacts speech understanding, particularly vowel perception.
- Simulating hearing loss in normal-hearing individuals aids in understanding auditory processing challenges.
- Previous research established baseline data for young hearing-impaired listeners.
Purpose of the Study:
- To compare vowel perception in young normal-hearing (YNH) adults under simulated hearing loss conditions with young hearing-impaired (YHI) listeners.
- To determine if audibility alone explains performance differences between YNH and YHI listeners.
- To investigate the role of age and gender matching in auditory perception studies.
Main Methods:
- YNH adults were tested in conditions simulating mild-to-moderate sloping sensorineural hearing loss.
- Listening conditions were designed to equate audibility between YNH and YHI groups.
- Listeners discriminated synthetic vowel tokens with variations in F1 or F2 frequency.
Main Results:
- No significant differences in vowel discrimination performance were found between YNH and YHI listeners when audibility was matched.
- YHI listeners required more learning blocks but achieved similar discrimination levels as YNH listeners.
- Vowel perception performance was primarily explained by audibility, irrespective of hearing status.
Conclusions:
- Audibility is a critical factor in vowel perception for both normal-hearing and hearing-impaired individuals.
- Age and gender matching are important considerations in auditory research.
- Simulated hearing loss can effectively model aspects of real-world hearing impairment for research purposes.
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