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Sources of variation in phonetograms

R F Coleman1

  • 1Department of Otolaryngology-Head and Neck Surgery, Eastern Virginia Medical School, Norfolk 23507.

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

The phonetogram (F0-SPL Profile) shows varied results due to inconsistent methods, not just subject variability. Standardizing techniques is crucial for reliable vocal function assessment.

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Area of Science:

  • Speech science
  • Acoustic phonetics
  • Voice analysis

Background:

  • The phonetogram (F0-SPL Profile) is increasingly used in the US and Europe.
  • Existing research indicates significant variability in results obtained by different investigators using this technique.
  • This inconsistency raises concerns about the phonetogram's validity in describing vocal function limits.

Purpose of the Study:

  • To review common methodological diversities in phonetogram (F0-SPL Profile) application.
  • To explore the reasons behind the wide range of results reported by different researchers.
  • To propose that non-standardization of technique is a primary contributor to result variation.

Main Methods:

  • Literature review of phonetogram (F0-SPL Profile) studies.
  • Analysis of common methodological differences among investigators.
  • Comparison of technique variations and their impact on results.

Main Results:

  • Identified several common diversities in phonetogram (F0-SPL Profile) application methods.
  • Observed that variations in results often correlate with non-standardized techniques.
  • Found that inherent subject variability may be less of a factor than previously assumed.

Conclusions:

  • The wide range of phonetogram (F0-SPL Profile) results is largely attributable to non-standardized methodologies.
  • Standardization of phonetogram (F0-SPL Profile) techniques is essential for reliable vocal function assessment.
  • Further research should focus on developing and implementing consistent protocols for phonetogram use.

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