{HEAD ~ The low pass filter} 708 has a cut off {TAIL ~ frequency} of 2 kHz 
{ HEAD ~ The low pass filter } 708 has a cut off { TAIL ~ frequency } of 2 kHz
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH