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Predicting glottal closure insufficiency using fundamental frequency contour analysis.

Jacob T Cohen1, Alma Cohen2, Limor Benyamini1

  • 1Department of Otolaryngology Head and Neck Surgery, Rambam Health Care Campus, Haifa, Israel.

Head & Neck
|February 15, 2019
PubMed
Summary
This summary is machine-generated.

New voice analysis methods objectively measure vocal fold glottal closure insufficiency (GCI). These objective measurements correlate with traditional assessments, offering a quantitative tool for GCI evaluation.

Keywords:
glottal insufficiencyhoarsenessspeech processingvocal fold paralysisvoice analysis

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Area of Science:

  • Otolaryngology
  • Speech Science
  • Biomedical Engineering

Background:

  • Traditional voice analysis has limitations in daily clinical practice.
  • Vocal fold (VF) glottal closure insufficiency (GCI) assessment requires objective methods.
  • Developing quantitative measures for GCI is crucial for voice disorder diagnosis.

Purpose of the Study:

  • To develop objective measurements for assessing vocal fold glottal closure insufficiency (GCI) during phonation.
  • To evaluate the correlation of new parameters with traditional voice assessments.
  • To establish a quantitative method for evaluating GCI in patients.

Main Methods:

  • Examined 18 healthy subjects and 20 patients with unilateral VF paralysis before and after treatment.
  • Extracted voice analysis, measuring settling time, slope, and area under the fundamental frequency (F0) curve.
  • Analyzed F0 curve contours to identify patterns related to glottal closure.

Main Results:

  • New parameters (settling time, slope, area under F0 curve) correlated with traditional acoustic voice assessments.
  • Parameters showed significant changes before and after injection medialization laryngoplasty.
  • Identified typical F0 curve contours corresponding to different glottal closure conditions.

Conclusions:

  • The fundamental frequency curve exhibits distinct contours related to glottal closure status.
  • Proposed novel parameters effectively capture these F0 curve contours.
  • These new parameters provide a quantitative method for assessing individuals with GCI.