At the same time, {TAIL ~ a string} of {HEAD ~ synthetic speech samples} is transmitted to an audio server 
At the same time , { TAIL ~ a string } of { HEAD ~ synthetic speech samples } is transmitted to an audio server
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH