Relationship between vocal doses and voice disorders on primary school teachers

Arianna Astolfi, Pasquale Bottalico, Anna Accornero, Massimiliano Garzaro, Juri Nadalin, Carlo Giordano

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A growing number of teachers is affected by vocal effort, that is a physiological magnitude that accounts for the changes in voice production due to some factors like distance from the listener, noise and physical environment, while vocal load is the amount of voicing performed by speakers over time. A sustained vocal effort combined with a prolonged vocal load, is assumed to result in increased instances of voice disorders. The effects of voice disorders range from a mild disturbance of voice quality to complete loss of the normal speech functions. In order to investigate the vocal load on teachers some "vocal doses" related to long-time phonation have been proposed by Titze et al. (2003). The doses are obtained from the phonation time, the fundamental frequency and the sound pressure level recorded close to the speaker's mouth. The aim of the study was to investigate vocal doses and parameters in a sample of 29 primary school teachers during two or three working days and compare these objective data with self-reported disturbances, objective laryngeal findings and clinician rating evaluation of voice. The Ambulatory Phonation Monitor (APM 3200) by KayPentax®, is a portable device that was used for the analyses. It was worn by the volunteers over two or three working days.

Original languageEnglish (US)
Title of host publicationEURONOISE 2012 - 9th European Conference on Noise Control
Number of pages6
StatePublished - Sep 13 2012
Externally publishedYes
Event9th European Conference on Noise Control, EURONOISE 2012 - Prague, Czech Republic
Duration: Jun 10 2012Jun 13 2012

Publication series

NameProceedings - European Conference on Noise Control
ISSN (Print)2226-5147


Other9th European Conference on Noise Control, EURONOISE 2012
Country/TerritoryCzech Republic

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Public Health, Environmental and Occupational Health
  • Building and Construction
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Automotive Engineering
  • Aerospace Engineering


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