Wk filter is used for the assessment of the influence of the vibration signal on the human body in the z direction
and for vertical recumbent direction. It conforms with ISO 2631-1-97 and ISO 8041-1:2017
“Wk” filter characteristics
Wd filter is used for the assessment of the influence of the vibration signal on the human body in the x and y
directions and for horizontal recumbent direction. It conforms with ISO 2631-1-97 and ISO 8041-1:2017
“Wd” filter characteristics