ABSTRACT
The possible adverse effects of excessive noise exposure on hearing have been well-established (Sliwinska-Kowalska et al., 2007, Nandi et al., 2008). To prevent occupational noise-induced hearing loss, collective measures can be taken to reduce the overall noise level at the work layout (Bies et al., 2003). Hearing protection is only used when these interventions are insufficient or unfeasible. Noise can be controlled by blocking the noise at the source, along its path from the source to the receiver, and at the end receiver (Hsu et al., 2004).
