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Multidimensional scaling analysis of dysphonia in two speaker groups
G B Kempster1, D J Kistler, J Hillenbrand
1Governors State University, College of Health Professions, University Park, IL 60466.
Journal of Speech and Hearing Research
|June 1, 1991
Summary
This study identified key voice features that listeners use to judge vocal similarity in dysphonic female voices. Findings link perceptual judgments to acoustic measures of intensity, frequency, and perturbation.
Area of Science:
- Speech and Hearing Sciences
- Acoustic Analysis
- Voice Disorders
Background:
- Dysphonia affects voice quality and perception.
- Understanding perceptual features is crucial for clinical assessment.
- Previous research has explored acoustic correlates of dysphonia.
Purpose of the Study:
- To identify perceptually relevant acoustic features in dysphonic female voices.
- To understand the dimensions listeners use to judge voice similarity.
- To inform clinical evaluation of voice disorders.
Main Methods:
- Analyzed 30 dysphonic female voices.
- Utilized multidimensional scaling (MDS) with ALSCAL.
- Extracted three perceptual dimensions explaining ~60% of variance.
Main Results:
- Identified three key perceptual dimensions.
- These dimensions correlated with measures of intensity, frequency, and perturbation.
- Listeners' judgments of voice similarity were systematically related to acoustic properties.
Conclusions:
- Perceptual judgments of dysphonic voices are systematically related to acoustic features.
- Findings provide insights into how clinicians evaluate voice quality.
- Acoustic measures of intensity, frequency, and perturbation are perceptually relevant.