Method evidence record

GRBAS Voice Perceptual Scale

The GRBAS Scale (Grade, Roughness, Breathiness, Asthenia, Strain) is a clinician-rated perceptual assessment tool for classifying voice quality across five distinct vocal dimensions. Developed by Hirano in 1981, GRBAS provides a standardized language for voice clinicians and physicians to describe dysphonia characteristics (e.g., rough voice, breathy voice, weak voice) using ordinal subscales. GRBAS is foundational in voice pathology education and remains widely used in clinical and research settings despite modern objective measures like acoustic analysis and laryngeal imaging.

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GRBAS Scale (Grade, Roughness, Breathiness, Asthenia, Strain)

Taxonomic method record · process-pipeline / speech-language-pathology

Hirano, M. (1981). Clinical Examination of Voice. Vienna: Springer-Verlag. · ISBN 978-3-7091-4621-5
Debruyne, F., Decoster, W., Van Gorp, G., & Verheggen, R. (1997). Perceptual Evaluation of Voice Disorders. Acta Oto-Laryngologica, 117(S527), 34–38. · URL
Karnell, M. P., Melton, S. D., Childers, D. G., & Hicks, D. M. (1991). Use of Nasofiberscope and Stroboscopy in Teaching Perceptual Voice Evaluation. Journal of Voice, 5(3), 236–241. · URL

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