Perceptual-auditory and Acoustic Analysis of Air Traffic Controllers' Voices Pre- and Postshift

Journal of Voice : Official Journal of the Voice Foundation
Anna C N W B VillarRenata Rangel Azevedo

Abstract

To characterize the vocal quality and acoustic parameters of voices of air traffic controllers (ATCs) without any vocal complaints before and after a shift. The voices of a group of 45 ATCs were recorded before and after a 2-hour shift, regardless of their operational position or number of previously worked shifts; both genders were included, participants had a mean age of 25 years, and they had a mean length of occupational experience of 4 years and 2 months. Each of these professionals was recorded phonating a sustained /a/ vowel and counting from 1 to 20, and the recordings were acoustically analyzed using the Praat software. A perceptual-auditory analysis of the recordings was then performed by three speech therapists specializing in voice, who evaluated the characteristics of each emission using a visual analog scale (VAS). The acoustic analysis was performed on the sustained /a/ vowel. The measures of intensity; frequency; maximum phonation time (MPT); and the first, second, third, and fourth formants were considered in this analysis. There were no significant differences between the random pre- and postshift samples, either in the acoustic or in the perceptual-auditory analysis. The perceptual-auditory analysis revealed ...Continue Reading

References

May 14, 1987·Nature·P D Boersma
Jul 16, 2013·Revista da Associação Médica Brasileira· Brazilian Association of Nutrology

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Citations

Dec 7, 2017·CoDAS·Anna Carolina Nascimento Waack Braga Villar, Liliane Desgualdo Pereira

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