Methods, {HEAD ~ systems}, and computer program products for securely transforming {TAIL ~ an audio stream} to encoded text 
for securely transforming
Methods , { HEAD ~ systems } , and computer program products for securely transforming { TAIL ~ an audio stream } to encoded text
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH