> When going back from the frequency domain to signal, I have to divide the > real part of the result by the length of the signal. Is it the convention > that I do that, or should the library?
Looks like every library does its own thing here - ie scale, not scale, offer options to scale - for now, fftr does no scaling (since scaling might be needed in either direction and sometimes by the square root, if done in both directions) - this is probably a reasonable starting point though maybe confusing for ... python and matlab users. hm.. see also <https://stackoverflow.com/questions/62881003/fftw-backwards-transform-is-multiplied-by-n> > It seems that depending on the length of the signal, the ifft result is > flipped sign wise. Bug, should be fixed now
