> "To find the energy at a particular frequency, spin your signal around a circle at that frequency, and average a bunch of points along that path" You're goin

> "To find the energy at a particular frequency, spin your signal around a circle at that frequency, and average a bunch of points along that path" You're going to need a longer sentence... [Edit] If this sentence genuinely did what it said on the tin, the rest of the article - which give a lot more detail - wouldn't be necessary.