{HEAD ~ The invention} further relates to a corresponding processing device and {TAIL ~ a listening device} with such a processing device 
relates to
{ HEAD ~ The invention } further relates to a corresponding processing device and { TAIL ~ a listening device } with such a processing device
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH