Acoustic changes of the voice as signs of vocal fatigue in radio broadcasters: Preliminary findings

Marco Guzmán, María Celina Malebrán, Paulina Zavala, Patricio Saldívar, Daniel Muñoz

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Introduction and objectives: Vocal fatigue is one of the most common voice symptoms. It usually refers to the sensation of vocal tiredness after a long period of speaking or singing. The purpose of this study was to compare the acoustic characteristics of the voice before and after a long period of voice use in a group of radio broadcasters. Methods: Eight radio broadcasters with normal voices were assessed. We used cepstrum, energy ratio, noise to harmonic ratio and soft phonation index as acoustic variables to assess the possible pre-post vocal loading changes objectively. Results: There were no statistically significant pre-post differences in any of the acoustic parameters. Although cepstrum at high pitch did not show a significant difference, it obtained the greatest difference among the acoustic variables. Conclusions: The acoustic measurements used in the present study might not be sensitive enough or appropriate for detecting vocal changes after a long period of voice use, whether in reading (as reported in previous research) or speaking tasks. Moreover, a longer period of vocal loading would eventually reveal more evident and consistent acoustic voice changes.
Original languageAmerican English
Pages (from-to)176-183
Number of pages8
JournalActa Otorrinolaringologica Espanola
Issue number3
StatePublished - 1 May 2013
Externally publishedYes


  • Acoustic analysis
  • Broadcasters
  • Cepstrum
  • Vocal fatigue
  • Vocal loading

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