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