# Known limitationsΒΆ

- Sometimes problems can occur due to known FFT features such as folding and aliasing.

Todo

Erik, please check this out and rewrite.

- I am not sure how filon integration works and deals with these
problem but be aware that
**dynasor**does not obey Nyquist criterion and you should probably only look at frequencies lower than \(\frac{\omega_{max}}{2}\). - One should take the absolute value of the frequency functions since FFT amplitudes can sometimes become negative.
- Only constant volume trajectories are supported.