Abstract

Work requirements often preclude the use of enclosures to reduce noise levels. While partial protection may be afforded by screens or other enclosures adapted to specific sound fields, the use of such equipment requires a detailed knowledge of the fields' characteristics.

This project analyzed sound fields at various workstations and developed a typology of impact noise, performed laboratory simulations of impact noise, developed appropriate screens and enclosures, and performed case studies of 30 companies in the heavy industry sector.

A series of typical workstations for which partial acoustic protection are feasible were identified. Protective equipment was developed on the basis of the results of the sound field simulations. Protective equipment such as that developed in this project should help prevent hearing problems in workers exposed to high noise levels. The equipment is capable of being manufactured by the same companies which produce soundproof enclosures.