The invention includes {HEAD ~ a sound detector system} for sensing the sound level from a mold during the blowing process, and outputting {TAIL ~ a sound level signal} 
for outputting
The invention includes { HEAD ~ a sound detector system } for sensing the sound level from a mold during the blowing process , and outputting { TAIL ~ a sound level signal }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL