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Related Experiment Videos

Tracking change in dysphonia: a case study

P Schneider1

  • 1Department of Communication Arts and Sciences, Queens College, City University of New York, Flushing.

Journal of Voice : Official Journal of the Voice Foundation
|June 1, 1993
PubMed
Summary

This study found that subjective voice quality changes correlated with vocal fold condition and patient symptoms, but objective acoustic measures did not. Further research is needed to understand these discrepancies in voice analysis.

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Area of Science:

  • Otolaryngology
  • Speech-Language Pathology
  • Acoustic Analysis

Background:

  • Vocal fold nodules can impact voice quality and function.
  • Assessing changes in voice often involves both clinical and acoustic evaluations.
  • Longitudinal studies are crucial for understanding disease progression and treatment effects.

Observation:

  • A case study tracked a woman with vocal fold nodules over two years with seven assessments.
  • Clinical measures included voice quality, vocal fold condition, and patient-reported symptoms.
  • Acoustic measures assessed mean fundamental frequency (MFF), jitter, and fundamental frequency range (FFR).

Findings:

  • Perceived voice quality changes aligned with alterations in vocal fold pathology and patient-reported vocal function.
  • Objective acoustic measures (MFF, FFR, jitter) did not demonstrate a clear relationship with clinical changes observed.
  • Discrepancies suggest limitations in current acoustic analysis for capturing subtle clinical variations.

Implications:

  • Clinical voice quality assessments and patient reports may be more sensitive to changes than specific acoustic parameters.
  • Future research should explore the utility of connected speech samples for more comprehensive acoustic and perceptual analysis.
  • Understanding these relationships is vital for accurate diagnosis and effective management of voice disorders.

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