MATLAB: High pass filter with cutoff set at 0.003Hz

frequency domainhigh pass filter

Hi,
I have a data set consisting of a mean bloodpressure and I want to high-pass-filter this signal with a DC cutoff set at 0.003 Hz. I'm not really familiar with signal processing (filter type, freq domain etc) so if anyone could help me out a bit, that would be great.
thanks in advance,
Paul

Best Answer

My filter design procedure is here: How to design a lowpass filter for ocean wave data in Matlab?
Before you design a filter with such a low stopband, consider your sampling frequency. If you have a ‘high enough’ sampling frequency, consider a Chebyshev Type II filter.
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