9.2.1.2. Weighting Filter W
c
The weighting filter W
c
is intended for the measurement of whole-body vibration at the seat
back in the direction perpendicular to the spinal column to ISO 2631-1.
Figure 12: Weighting filter W
c
9.2.1.3. Weighting Filter W
d
The weighting filter W
d
is used for measuring whole-body vibration in seated, standing or
recumbent positions at right angles to the spinal column to the standard ISO 2631-1.
Figure 13: Weighting filter W
d
19
0,01
0,10
1,00
10,00
1
10
100
1000
Hz
0,01
0,10
1,00
10,00
1
10
100
1000
Hz