Synopsis
		sfenvelope < in.rsf > out.rsf order=6 ref=1. hilb=n phase=90.

Parameters
		bool hilb=n [y/n] if y, compute Hilbert transform   int order=6 Hilbert transformer order   float phase=90. phase shift (in degrees) to use with hilb=y   float ref=1. Hilbert transformer reference (0.5 < ref <= 1)

Used In
		JSG          pmig/nmo pmig/mig pwc/cmp