Noise is an acoustic phenomenon producing an auditory sensation uncomfortable and unpleasant. Noise is also often perceived as aggression.
Despite considerable efforts to prevent the noise nuisance is frequently encountered in many companies in all sectors. Over 5 million people complain of noise and their workplace and more than 3 million are exposed to noise levels of 85 decibels or dB (A), which is currently the regulatory threshold.
A simple way of assessing subjective sound level: If one has difficulty speaking to a person within one meter and must raise their voices, the level of 85 dB (A) is reached.
Third leading cause of occupational disease
The hearing impairment caused by noise lesion is the third leading cause of occupational disease more common after the peri-articular disorders or MSDs (musculoskeletal disorders) and disorders resulting from the inhalation of asbestos dust. About 600 occupational deafness are recognized annually with an average unit cost of 100 000. (more…)