When connected in a receiver circuit, one of the electrodes of {HEAD ~ the transducer} is placed as a reference for the electronics and the other electrode is connected through amplifier means to {TAIL ~ a signal processing system} 
When connected in a receiver circuit , one of the electrodes of { HEAD ~ the transducer } is placed as a reference for the electronics and the other electrode is connected through amplifier means to { TAIL ~ a signal processing system }
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 OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL