The filter system filters the excursion signal to remove {HEAD ~ unwanted frequency components} from {TAIL ~ the excursion signal} 
from
The filter system filters the excursion signal to remove { HEAD ~ unwanted frequency components } from { TAIL ~ the excursion signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL