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Electroglottogram waveform types.

C Painter1

  • 1Department of Otolaryngology, Washington University School of Medicine, St. Louis, MO 63110.

Archives of Oto-Rhino-Laryngology
|January 1, 1988
PubMed
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Electroglottography (EGG) analysis reveals distinct vocal fold waveform patterns. Trained voice users show specific EGG patterns related to frequency, intensity, and voice quality, differentiating normal, breathy, and tense phonation.

Area of Science:

  • Laryngology
  • Speech Science
  • Bioacoustics

Background:

  • Electroglottography (EGG) is a non-invasive method for assessing vocal fold function.
  • Clinical application of EGG requires normative data for various voice types and objective comparison methods.
  • Understanding EGG waveform variations is crucial for diagnosing voice disorders.

Purpose of the Study:

  • To investigate electroglottogram (EGG) waveform characteristics in a trained professional voice user.
  • To explore how fundamental frequency, intensity, and voice quality influence EGG patterns.
  • To establish a basis for quantifying and comparing EGG waveforms.

Main Methods:

  • The study involved one trained professional voice user undergoing 15 experimental phonation sessions.

Related Experiment Videos

  • Phonation was varied across different fundamental frequencies, intensity levels, and voice qualities.
  • Electroglottography was used to record vocal fold vibration patterns.

    • Main Results:

    • Distinct EGG waveform tendencies were observed based on phonation parameters.
    • Normal voice phonation exhibited a spectrum from lower to higher frequencies and intensities.
    • Breathy voice EGG data clustered at the lower end, while tense voice data clustered at the upper end of this spectrum.

    Conclusions:

    • Phonation parameters significantly influence electroglottogram (EGG) waveform morphology.
    • EGG can differentiate between normal, breathy, and tense voice qualities in trained users.
    • Further normative studies are needed to establish clinical EGG standards.