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Transglottal pressures in professional singing.

H K Schutte, D G Miller

    Acta Oto-Rhino-Laryngologica Belgica
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Direct measurements reveal that during high-note singing, transglottal pressure can approach or drop below zero. This occurs when supraglottal pressure peaks late in the vocal fold cycle, impacting vocal fold dynamics.

    Area of Science:

    • Vocal acoustics
    • Physiology of singing
    • Speech and hearing science

    Background:

    • Understanding vocal fold dynamics is crucial for singers.
    • High notes present unique physiological challenges.
    • The "passaggio" is a critical transition point in vocal range.

    Purpose of the Study:

    • To directly measure sub- and supraglottal pressures in sopranos singing high notes.
    • To investigate transglottal pressure dynamics during specific vocal conditions.
    • To explore the relationship between pressure dynamics and vocal phenomena like vibrato and the passaggio.

    Main Methods:

    • Utilized high-frequency miniature pressure transducers for direct pressure measurements.
    • Recorded sub- and supraglottal pressures on two sopranos performing high vocal notes.

    Related Experiment Videos

  • Analyzed pressure waveforms in relation to the glottal cycle and vibrato modulation.

    • Main Results:

    • Instantaneous transglottal pressure approached zero when supraglottal pressure peaked late in the glottal open phase.
    • In one subject, vibrato modulation caused transglottal pressure to drop below zero.
    • Observed pressure dynamics provide insights into vocal fold behavior during challenging singing conditions.

    Conclusions:

    • Singing high notes involves complex pressure fluctuations within the vocal tract.
    • Late peaks in supraglottal pressure can lead to near-zero or negative transglottal pressure.
    • These findings have implications for understanding vocal fold function, the glottal volume velocity waveform, and the singer's "passaggio" experience.