filter ECG and PPG signal with low pass filter

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Dominik Smolinsky
Dominik Smolinsky on 29 Apr 2021
Commented: Mathieu NOE on 29 Apr 2021
Hello guys.
I have ECG signal with 125 sampling frequency and i have to filter it with low pass filter. Which are the best "settings of filter?"
[b, a] = fir1(%i need 2 arguments here
, 'low');
y = filtfilt(b, a, ECG);
[peaks, poloha] = findpeaks(y, 'MinPeakDistance', 320);
ECG_sprac = length(poloha);
[b, a] = fir1(%i need 2 arguments here
,'low');
y = filtfilt(b, a, PPG);
[peaks, poloha] = findpeaks(y, 'MinPeakDistance', 320);
PPG_sprac = length(poloha);
breathVAL = (ECG_sprac + PPG_sprac)/2;
  1 Comment
Mathieu NOE
Mathieu NOE on 29 Apr 2021
hi
maybe you should first explain why the need for low pass filterning (noise ?) and also sharing the data would help
tx

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