Summary
Acoustic Voice Quality Index is a six-variable acoustic model for the multiparametric
measurement developed by Maryn et al. Studies have provided evidence regarding the
practical usefullness, internal consistency, external validity, diagnostic accuracy,
and responsiveness to change of AVQI. Recently, researchers have been exploring the
utility of AVQI in classifying the voice severity. The aim of the present study was
to determine the diagnostic accuracy of the AVQI v.02.03 in discriminating across
the perceptual levels of dysphonia severity in 18-40 years age range in Kannada speaking
population; and to develop an application to depict the AVQI based severity of dysphonia.
For the study, 163 individuals in normophonic and 134 individuals in dysphonic group
were considered in the age range of 18-40 years. All participants were native speakers
of Kannada language. The sustained vowel /a/ and reading of standard Kannada passage
were considered as stimuli for extracting AVQI analysed using AVQI script version 02.03. The AVQI cut-off values obtained were 2.50 (AROC=0.894; Sensitivity= 84.7%; Specificity= 83.1%), 4.17 (AROC=0.953; Sensitivity= 84.4%; Specificity= 88.5%) and 6.23 (AROC=1.000; Sensitivity= 100%; Specificity= 100%) for normal vs. mild, mild vs. moderate
and moderate vs. severe respectively. A user friendly application was developed which
provides a simplified output for AVQI cut-off values which can be comprehendible by
patients with voice disorder/ non-professionals and health professionals.
Key words
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Article info
Publication history
Published online: October 01, 2022
Accepted:
August 8,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2022 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
