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