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Influence of a wearer's voice on noise dosimeter measurements

Steven R. Ryherd (Institutionen för bygg- och miljöteknik, Teknisk akustik, Rumsakustik) ; Mendel Kleiner (Institutionen för bygg- och miljöteknik, Teknisk akustik, Rumsakustik) ; Kerstin Persson Waye ; E. E. Ryherd
Journal of the Acoustical Society of America (0001-4966). Vol. 131 (2012), 2, p. 1183-1193.
[Artikel, refereegranskad vetenskaplig]

In recent years, interest in personal noise exposure has expanded beyond a workplace safety measure to become an effective means of investigating physiological effects of the acoustic environment on an individual. This work investigates the effects of the wearer's voice as a possible dominant sound source on body-mounted noise dosimeters and develops methods to improve the application of dosimeter measurements in medium-level noise environments. Subjects experienced a controlled set of acoustic conditions while wearing a dosimeter. In each condition, sound pressure levels were recorded with and without the subject speaking controlled phrases. Three experimental variables were considered-room type, noise type, and noise level. All three variables had a statistically significant effect upon the contribution of speech to a dosimeter measurement; for example, noise level was shown to cause a change in speech contribution by as much as 5.5 dB between sequential levels. Based upon the analysis, a method of predicting the decibel contribution of a wearer's voice was developed. The results of this study can be used to estimate the effect of a wearer's voice on dosimeter measurements in medium-level noise environments.

Nyckelord: speech production, hearing



Denna post skapades 2012-04-03. Senast ändrad 2015-03-05.
CPL Pubid: 156415

 

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Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Teknisk akustik, Rumsakustik
Institutionen för medicin, avdelningen för samhällsmedicin och folkhälsa (GU)

Ämnesområden

Akustik
Miljömedicin

Chalmers infrastruktur