{HEAD ~ A system,30}, wherein {TAIL ~ the reconstruction filter} is inversely related to the transfer function 
{ HEAD ~ A system,30 } , wherein { TAIL ~ the reconstruction filter } is inversely related to the transfer function
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH