Quantitative high-speed laryngoscopic analysis of vocal fold vibration in fatigued voice of young karaoke singers

J Voice. 2013 Nov;27(6):753-61. doi: 10.1016/j.jvoice.2013.06.010. Epub 2013 Sep 3.

Abstract

Purpose: The present study aimed to determine whether there were physiological differences in the vocal fold vibration between nonfatigued and fatigued voices using high-speed laryngoscopic imaging and quantitative analysis.

Methods: Twenty participants aged from 18 to 23 years (mean, 21.2 years; standard deviation, 1.3 years) with normal voice were recruited to participate in an extended singing task. Vocal fatigue was induced using a singing task. High-speed laryngoscopic image recordings of /i/ phonation were taken before and after the singing task. The laryngoscopic images were semiautomatically analyzed with the quantitative high-speed video processing program to extract indices related to the anteroposterior dimension (length), transverse dimension (width), and the speed of opening and closing.

Results: Significant reduction in the glottal length-to-width ratio index was found after vocal fatigue. Physiologically, this indicated either a significantly shorter (anteroposteriorly) or a wider (transversely) glottis after vocal fatigue.

Conclusion: The high-speed imaging technique using quantitative analysis has the potential for early identification of vocally fatigued voice.

Keywords: Amateur singing; High-speed imaging; Vocal fatigue.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Female
  • Humans
  • Laryngoscopy*
  • Male
  • Reproducibility of Results
  • Singing
  • Speech Acoustics
  • Vocal Cords / physiopathology*
  • Voice Disorders / diagnosis*
  • Voice Disorders / physiopathology
  • Young Adult