Field investigation of real-world attenuation provided by insert-type hearing proteetors
The purpose of this study is to see how much attenuation the hearing protection device (HPD) wearer gets using an insert-type HPD at work in real-world situations and to see if there is a relation between how the wearer puts his HPD in place and the surrounding noise leveL Five different companies were selected and aU together there were 43 participants. The test subjects work in such an environme