where {HEAD ~ U} and V are {TAIL ~ integers} for delimiting a predetermined frequency region to determine the feature vector f of the organ 
are
where { HEAD ~ U } and V are { TAIL ~ integers } for delimiting a predetermined frequency region to determine the feature vector f of the organ
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH