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Multiparameter Voice Assessment in Dysphonics: Correlation Between Objective and Perceptual Parameters.
S V Narasimhan1, Rajesh Rashmi2
1Department of Speech & Language Pathology, JSS Institute of Speech & Hearing, Mysore, Karnataka, India.
Summary
Objective and perceptual voice assessments can differentiate between normal and dysphonic voices. Cepstral measures showed stronger correlations with perceptual ratings of voice grade, breathiness, and roughness than acoustic measures.
Area of Science:
- Speech and Hearing Sciences
- Otolaryngology
- Biomedical Engineering
Background:
- Perceptual and objective voice assessments are crucial for distinguishing between normal and dysphonic voices.
- Understanding the correlation between these measures enhances clinical differentiation.
- Limited research exists on the relationship between perceptual and objective voice parameters.
Purpose of the Study:
- To compare perceptual and objective voice parameters in individuals with and without dysphonia.
- To investigate the correlation between perceptual and objective voice parameters in dysphonic individuals.
Main Methods:
- A retrospective study design involving two groups: dysphonic patients and healthy controls.
- Phonation samples were collected for perceptual analysis using the GRBAS scale.
- Acoustic and cepstral analyses were performed on the collected voice samples.
Main Results:
- Significant differences were found in perceptual ratings and objective measures between the dysphonic and control groups.
- Cepstral measures demonstrated stronger correlations with perceptual ratings (grade, breathiness, roughness) compared to time-based acoustic measures.
- Objective voice measures showed significant variations between the two participant groups.
Conclusions:
- Further research on the correlation between perceptual and objective voice measures across varying degrees of dysphonia is recommended.
- Improved reliability in discriminating and quantifying voice qualities like hoarseness, harshness, and breathiness is achievable.
- Enhanced understanding can aid in differentiating dysphonic from modal voices more effectively.
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