Auditory Perceptual Judgement and Acoustical Study of Liquid Sounds in Children Aged 4~6 Years According to Clinical Experience
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Purpose: This study examines whether there are differences in the auditory perceptual evaluation of speech produced by children according to the listener’s clinical experience and seeks to find acoustic correlates. Methods: Fifteen speech-language pathologists (SLPs) and 15 students listened to Korean liquids produced by children aged 4 to 6 years and assessed them using a 5-point Likert scale. The relationship between auditory perceptual evaluation and acoustic variables was analyzed. Results: First, there is a difference in auditory perception scores between laterals and flaps at different ages within 4 to 6 years, and there is a difference in auditory perception scores depending on the vowel environment. Second, the SLP group’s auditory-perceptual evaluation was consistent with the child’s general laterals and flaps development pattern, while the student group’s auditoryperceptual evaluation differed from the laterals and flaps development. Third, in the regression analysis, a higher spectral slope was associated with higher auditory perceptual evaluation in the SLP’s data. Conclusion: It was confirmed that clinical experience plays a quite important role in auditory perceptual evaluation. However, various follow-up studies are needed to enhance the accuracy of these evaluations.
Abstract
Purpose: This study examines whether there are differences in the auditory perceptual evaluation of speech produced by children according to the listener’s clinical experience and seeks to find acoustic correlates. Methods: Fifteen speech-language pathologists (SLPs) and 15 students listened to Korean liquids produced by children aged 4 to 6 years and assessed them using a 5-point Likert scale. The relationship between auditory perceptual evaluation and acoustic variables was analyzed. Results: First, there is a difference in auditory perception scores between laterals and flaps at different ages within 4 to 6 years, and there is a difference in auditory perception scores depending on the vowel environment. Second, the SLP group’s auditory-perceptual evaluation was consistent with the child’s general laterals and flaps development pattern, while the student group’s auditoryperceptual evaluation differed from the laterals and flaps development. Third, in the regression analysis, a higher spectral slope was associated with higher auditory perceptual evaluation in the SLP’s data. Conclusion: It was confirmed that clinical experience plays a quite important role in auditory perceptual evaluation. However, various follow-up studies are needed to enhance the accuracy of these evaluations.
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