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Related Experiment Videos

Chest wall vibrations in singers.

J Sundberg

    Journal of Speech and Hearing Research
    |September 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Singers

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    Area of Science:

    • Vocal acoustics and biomechanics
    • Physiology of voice production

    Background:

    • Chest wall vibrations during phonation are a complex phenomenon.
    • Understanding the origin and characteristics of these vibrations is crucial for voice control.

    Purpose of the Study:

    • To investigate the origin, amplitude, and spectrum of chest wall vibrations in singers.
    • To determine the relationship between voice source characteristics and chest wall vibrations.
    • To explore the potential of chest wall vibrations as a non-auditory feedback signal for phonation control.

    Main Methods:

    • Seven singers (male and female) participated in the study.
    • Accelerometers were used to measure vibrations on the sternum, thyroid cartilage, and trachea.
    • Analysis focused on the influence of subglottal pressure, vocal fold mechanics, and laryngeal resonances.

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    Main Results:

    • Subglottal pressure oscillations appear to be the primary driver of chest wall vibrations.
    • Vocal fold mechanical shocks have a secondary influence.
    • The amplitude of the voice source fundamental directly correlates with chest wall vibrations.
    • Chest wall vibration amplitude exceeds the Pacinian receptor threshold for vibratory sensation below approximately 300 Hz fundamental frequency.
    • Vibration amplitude varies significantly with different phonation types (pressed, flow, breathy).

    Conclusions:

    • Chest wall vibrations reflect the voice source, particularly the fundamental amplitude.
    • Chest wall vibration sensation can serve as a valuable non-auditory feedback mechanism for voluntary phonation control.
    • This feedback is room-independent, offering advantages for singers in various environments.