Additionally, the path of acoustic energy from a noise source, through the composite transducer, and to the ear canal can be lengthened by the addition of {HEAD ~ a baffle} around which {TAIL ~ the acoustic energy} must travel 
Additionally , the path of acoustic energy from a noise source , through the composite transducer , and to the ear canal can be lengthened by the addition of { HEAD ~ a baffle } around which { TAIL ~ the acoustic energy } must travel
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH