what is the fft function in r what is fft function? when is r phase angle normalized r is it necessary to normalize a phase angle is r phase shift normalized does r have to use normalized r what does fft mean in r what is a fft in r used for do i get phase angle from r r calculating phase angle what phase does r use when it computes phase angle when do i use fft to compute phase angle r calculate phase angle from fft r do i have to normalize the output before computing the phase angle? what is phase shift in r? what is normalized fft output what if r's output is not normalized do i use fft for phase axons in r what is phase angle for r can a normalized l fft be used to find phase angle?