{HEAD ~ One or more sonic speakers} disposed below or coincident to {TAIL ~ the fluid based center} generate fluid sound waves 
{ HEAD ~ One or more sonic speakers } disposed below or coincident to { TAIL ~ the fluid based center } generate fluid sound waves
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH