Noise exposure from communications headsets: The effects of environmental noise, attenuation and SNR under the device
AbstractThe Canadian studies on headset exposure at various industrial sites and Crabtree are reviewed to gain more insight into the main determinants of headset sound exposure and to provide an empirical basis for the new calculation method under the CSA WG. The field method require two similar communication headset, one worn by the worker to carry out normal tasks and one placed on the manikin to measure sound levels under the device. The correlation coefficient shows that about 95% of the noise variation in headset sound level is explained by the environmental background noise around the user. The slope of regression line is found to be 0.42, which shows that the headset exposure rose by only 0.42 dB for each 1 dB increase in background noise over the data set. The headset equivalent sound levels and the background noise is found to be +12 to +15 dB in the quieter settings and -5 to 0 dB in the noisier settings.
Copyright on articles is held by the author(s). The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, a worldwide exclusive licence (or non-exclusive license for government employees) to the Publishers and its licensees in perpetuity, in all forms, formats and media (whether known now or created in the future)
i) to publish, reproduce, distribute, display and store the Contribution;
ii) to translate the Contribution into other languages, create adaptations, reprints, include within collections and create summaries, extracts and/or, abstracts of the Contribution;
iii) to exploit all subsidiary rights in the Contribution,
iv) to provide the inclusion of electronic links from the Contribution to third party material where-ever it may be located;
v) to licence any third party to do any or all of the above.