FilteringΒΆ

Go to Signals>Filter signal to filter a signal. The following windows pops up:

../_images/signals_filter_popup.png

The parameters are :

  • Raw signal : The signal to be filtered
  • Filter type : first field can be high-pass, low-pass, band-pass or band-stop. Second field is filter type, FIR, Butterworth (default), Chebyshev Type I or II or Elliptic.
  • Cut-off frequency : Low and/or high cut-off frequencies in Hz.
  • Order : order of the filter
  • Frequency Response : Shows the frequency response of the filter in a new figure.
  • Add view : Add a temporal view of the filtered signal.
  • Window : If a view is added, this is the number of the window where to add it.
  • Position : Position of the view in the window

The Frequency Response button allow to visualize the frequency response of the filter:

../_images/signals_filter_response.png