MATLAB: How can ı filter high pass filer

Question

hi there,

ı would like to use a high-pass filter with a cut-off frequency of 0.02 Hz in a time domain.

is that possible to filter frequencies in time domain?

thanks

Answer 1

If you have R2018a or later use the highpass (link) funciton. It returns an efficient elliptical filter. If you use the ‘d’ (digital filter object) output, use filtfilt with it to filter your signal, not filter as suggested in the documentation.