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Multiparametric evaluation of dysphonic severity.

Estella P-M Ma¹, Edwin M-L Yiu

¹Division of Speech Pathology, The University of Queensland, Brisbane, Queensland, Australia. estella.ma@shrs.uq.edu.au

Journal of Voice : Official Journal of the Voice Foundation

|September 28, 2005

Summary

Predicting voice quality severity is possible using a few key measures. Maximum phonation time, peak intraoral pressure, voice range profile area, and acoustic jitter accurately predicted overall severity in dysphonic individuals.

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Area of Science:

Speech and Hearing Sciences
Otolaryngology
Acoustics

Background:

The multiparametric approach is increasingly used for voice quality assessment.
Accurate prediction of perceived voice severity is crucial for clinical diagnosis and treatment planning.

Purpose of the Study:

To evaluate the accuracy of a minimal set of aerodynamic, voice range profile (phonetogram), and acoustic perturbation measures in predicting perceived overall voice quality severity.
To identify the most effective instrumental measures for discriminating between dysphonic and normal voices and correlating with perceptual severity ratings.

Main Methods:

Involved 112 individuals with dysphonia and 41 healthy controls.
Perceptual severity was rated using the G (overall grade) parameter of the GRBAS scale by four listeners.

Related Experiment Videos

A minimal set of instrumental measures was selected based on discriminative ability and correlation with perceived severity.

Main Results:

Maximum phonation time, peak intraoral pressure, voice range profile area, and acoustic jitter were identified as key predictors.
These four measures in combination correctly predicted 67.3% of perceived overall severity levels using discriminant function analysis.

Conclusions:

A minimal set of aerodynamic, voice range profile, and acoustic measures can accurately predict perceived voice quality severity.
This finding supports the use of a focused, multiparametric approach for efficient and reliable voice assessment.