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