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Acoustic analysis of voice in children with noduli vocales.

G Niedzielska1, E Glijer, A Niedzielski

  • 1Department of Paediatric Otolaryngology, Phoniatry and Audiology, Medical Academy, 20-093 Lublin, Poland.

International Journal of Pediatric Otorhinolaryngology
|August 24, 2001
PubMed
Summary

Acoustic voice analysis effectively identifies children with vocal fold nodules (noduli vocales). Treatment improves voice parameters like jitter and shimmer, indicating acoustic analysis can monitor progress.

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Area of Science:

  • Otolaryngology
  • Speech-Language Pathology
  • Acoustic Analysis

Background:

  • Vocal fold nodules (noduli vocales) are common in children, affecting voice quality.
  • Objective voice assessment is crucial for diagnosis and management.
  • Previous studies highlight the need for reliable diagnostic tools.

Purpose of the Study:

  • To investigate the utility of acoustic voice analysis in differentiating children with noduli vocales from healthy controls.
  • To assess the changes in acoustic parameters following treatment for noduli vocales.
  • To determine if acoustic analysis can serve as a tool for monitoring treatment effectiveness.

Main Methods:

  • Acoustic voice tests were performed on 46 children diagnosed with noduli vocales before and after treatment.

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  • Voice acoustic parameters were compared between the patient group and a control group of children without laryngeal pathology.
  • Key parameters analyzed included jitter, shimmer, fundamental frequency (Fo) tremor, and harmonics-to-noise ratio (HNR).

    • Main Results:

    • Significant differences were observed in jitter, shimmer, Fo tremor, and HNR between children with noduli vocales and the control group.
    • These acoustic parameters showed a trend towards normalization after treatment in the children with noduli vocales.
    • The identified acoustic markers effectively distinguished between pathological and healthy vocal fold conditions.

    Conclusions:

    • Acoustic analysis of voice parameters provides objective differentiation between children with and without noduli vocales.
    • Treatment for noduli vocales leads to measurable improvements in acoustic voice characteristics.
    • Acoustic voice analysis is a valuable, non-invasive tool for monitoring the progress of voice therapy in children.