[*~ -1] should do i, no? d. ................ wrote: > Dear all, I know this is possibly a simple request, but i am looking for a > way to shift phase of a signal by 180 degrees in realtime, in order to > implement cancellation of said signal, -- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 36: "Consult other sources -promising -unpromising"