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