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Influence of a wearer's voice on noise dosimeter measurements

Artikel i vetenskaplig tidskrift
Författare Steven R. Ryherd
Mendel Kleiner
Kerstin Persson Waye
E. E. Ryherd
Publicerad i Journal of the Acoustical Society of America
Volym 131
Nummer/häfte 2
Sidor 1183-1193
ISSN 0001-4966
Publiceringsår 2012
Publicerad vid Institutionen för medicin, avdelningen för samhällsmedicin och folkhälsa
Sidor 1183-1193
Språk en
Länkar dx.doi.org/10.1121/1.3675941
https://gup.ub.gu.se/file/151042
Ämnesord speech production, hearing
Ämneskategorier Akustik, Miljömedicin

Sammanfattning

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.

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