#	Measurement of trace amplitudes
#
#	Measurement of RMS amplitudes of several arrivals in time windows
#	determined by trace header parameters:
#		[fbreak..fbreak1] for the first arrival, the
#		output goes to the header a-fb, etc.
#
#	Note that the absence of the travel-time peaks is indicated with the
#	negative values of the window time starts (fbreak, pmp, etc).
#	Thus, the time starts are also used to select the traces for processing


*call	trcmath
ampl	fbreak	0		fbreak	fbreak1	rms	a-fb
ampl	pmp	0		pmp	pmp1	rms	a-pmp
ampl	sdir	0		sdir	sdir1	rms	a-sdir
ampl	sms	0		sms	sms1	rms	a-sms

#	/\	/\
####  this is the selector (the operation is performed on traces for which fbreak > 0, etc.)