#### mfl

##### Newbie level 3

given a N-point window h, how do I create an oversampled Fourier transform H out of h? I need to have very high resolution of the H so that I can find out the magnitude of arbitrary frequency with little frequency error.

This is what I did: to oversample h with factor 2, I first sampled the window h with N * 2 points, and then simply FFT the 'new h' with N*2-point. But the H with N*2 points looks very different from H with N points. What am I doing wrong?

Thanks in advance!