Summary
Objectives
The advantages of cepstral measurements in the evaluation of dysphonia have been noted
in previous studies. However, there is an unclarity regarding the results of cepstral
analyzes effect in determining the severity of dysphonia. The aims of this study were
to determine the cut-off values of cepstral peak prominence, cepstral peak prominence
standard deviation, low frequency/ high frequency ratio, low frequency/high frequency
ratio standard deviation, and cepstral spectral index of dysphonia for predicting
the voice severity within a Turkish speaking population, as well as to confirm the
discriminative power of these cut-off values.
Materials Methods
One hundred ninety-five individuals with voice disorders and an equal number of age
and gender-matched individuals without voice disorders were included. Included subjects
had visited the Hacettepe University Hospitals Speech and Language Therapy Department
for voice evaluation between January 2017 and September 2021. The voice recordings
from all participants included the six CAPE-V/Turkish sentences and sustained vowel
/a/. Three raters provided auditory perceptual ratings of the voice samples using
the GRBAS scale (grade) and overall severity for the CAPE-V/Turkish. Participants
were categorized into normal and mild, moderate, and severely dysphonic groups based
on the auditory perceptual evaluation. Analysis of Dysphonia in Speech and Voice (ADSV)
software was used for cepstral spectral acoustic analysis.
Results
In the sustained vowel context, the area under the curve (ROC) for the CSID value
was >0.8, except for mild vs. moderate dysphonia groups. In connected speech contexts,
the ROC of the CPP value was also >0.8, except for normal vs. mild dysphonia groups.
The cut-off values of CPP and CSID demonstrated high sensitivity and specificity for
predicting voice severities.
Conclusion
The cut-off values for the parameters that predicted voice severities showed a significant
degree of discriminative power for categorizing voice severities among Turkish-speaking
people.
Key Words
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Article info
Publication history
Published online: January 30, 2023
Accepted:
December 15,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2022 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
