Metadata
Author: Giga-fren
Data
English[en]
This is achieved first by measuring the SPL (see Appendix 1 for measurement techniques), and reducing exposure levels where required, preferably with engineering controls, reducing sound at its source or in its path by installing sound-absorbing material and containment baffles.
French[fr]
comme la réduction du niveau ultrasonore à la source ou l’installation de barrières acoustiques sur le trajet des ultrasons.