6
$\begingroup$

I am looking for a way to completely describe which kind of digital filters I used to process my data, although it seems only few publications in general report all the details.

I think I should describe at least

  • Which type of filter was applied (low-pass, high-pass, etc).
  • Cutoff frequencies
  • IIR / FIR
  • Phase response?
  • How the filter was designed?
  • Transition bands

Also, I would like to know the attenuation is reported? Sometimes it is written that attenuation was x dB per octave, how does one calculate that?

I'm using MATLAB's fdatool for filter design + command filtfilt (zero-phase) to do the filtering. Basicly I would like to cover all the selections I made.

Improve this question
$\endgroup$
3
$\begingroup$

Five of those (low/high-pass, cutoff freq, and IIR/FIR, how the filter was designed, attenuation) can be easily described using words or numbers. The others (phase response, transition bands) are often better described with a picture.

I would recommend describing those five "describable" characteristics and, if appropriate, put pictures of the phase and magnitude response along with the actual filter taps in an appendix or something.

Improve this answer
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.