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