Internal notes: | 2019-08-08: Editorial corrections: replacement of the () in the specific use; deletion leading article and incorrect exponent "e"; correction of the imaginary unit in the exponent from "i" to "j"; presentation "f", "g", "A" and "\phi" in italics; addition of a cross-reference to "analytic signal [IEV 702-04-52]". Validated with Erik Jacobson. JGO |