{HEAD ~ The normalized signal} and a signal output from a pattern memory section are supplied to {TAIL ~ a subtracting section} for taking the difference between these two signals for each of the intervals 
supplied to
{ HEAD ~ The normalized signal } and a signal output from a pattern memory section are supplied to { TAIL ~ a subtracting section } for taking the difference between these two signals for each of the intervals
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH