Hello there,

I have multiple datasets of time series.

each time series is 256 points

SETS:

A=220k time series

B= set C + set D 79k time series

C=29k time series

D=50k time series

F= 2*set B

Ok so here is where it gets wierd.

I take the FFT of all these set, A’ B’…

and everything appears to be normal

but then when i take the iFFT it takes very different times,

A=75ms

B=1300ms

C=20ms

D=25ms

F=1300ms

(numbers are ~averages over a few runs each)

does anyone have any tips or pointers to figure out that this may be?

thanks =)