a cushion means for cushioning the second input transducer, the output transducer, and the frame structure away from the ear, and for impeding the free flow of air {HEAD ~ parallel} to {TAIL ~ said same plane} between the ear canal and the pickup surface of the second input transducer 
a cushion means for cushioning the second input transducer , the output transducer , and the frame structure away from the ear , and for impeding the free flow of air { HEAD ~ parallel } to { TAIL ~ said same plane } between the ear canal and the pickup surface of the second input transducer
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 OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH