EVS-EN ISO 11204:2009

This International Standard specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in any environment which meets certain qualification requirements. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source. One or more specified positions may be located in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions. NOTE 1 Throughout the document the word "source under test" is used to represent either a machine or a piece of equipment. Emission sound pressure levels are determined as A-weighted levels. Additionally levels in frequency bands and C-weighted peak emission sound pressure levels can be determined according to this International Standard, if required. NOTE 2 The contents of the ISO 11200 series (ISO 11201 to ISO 11205) are summarized in ISO 11200.