MATLAB: How to compensate for the delay introduced by an IIR notch filter

delay compensationecgiir notchpowerline interference

Hello, I'm using an IIR notch filter(using iirnotch command) to remove the powerline interference. Will there be a delay due to this in my signal? If so, how can I compensate for this?

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https://in.mathworks.com/help/signal/ref/filtfilt.html

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MATLAB: IIR Bandstop (Notch) Filter design

I have absolutely no idea what ‘2.01’, ‘2.02’ and ‘2.03’mean.

Here is a prototype bandstop filter design that you can change to produce the filter you want:

Fs = 900;                                                           % Sampling Frequency
Fn = Fs/2;                                                          % Nyquist Frequency
Wp = [48 52]/Fn;                                                    % Stopband Frequency (Normalised)
Ws = [0.9 1.1].*Wp;                                                 % Passband Frequency (Normalised)
Rp =  1;                                                            % Passband Ripple
Rs = 90;                                                            % Passband Ripple (Attenuation)
[n,Wp] = ellipord(Wp,Ws,Rp,Rs);                                     % Elliptic Order Calculation
[z,p,k] = ellip(n,Rp,Rs,Wp,'stop');                                 % Elliptic Filter Design: Zero-Pole-Gain 
[sos,g] = zp2sos(z,p,k);                                            % Second-Order Section For Stability
figure
freqz(sos, 2^18, Fs)                                                % Filter Bode Plot
set(subplot(2,1,1), 'XLim',[0 Fs/5])                                % Optional

set(subplot(2,1,2), 'XLim',[0 Fs/5])                                % Optional
% signal_filt = filtfilt(sos, g, signal);                             % Filter Signal

Un-comment the filtfilt line to filter your signal.

MATLAB: How to design FIR lowpass filter with cutoff frequency, fc1 = 20 Hz and FIR bandpass filter with cutoff frequency fc2 = 10 Hz and fc3 = 35 Hz.

Déjà vu

how to design IIR highpass filter with cutoff frequency of 20Hz and FIR bandpass filter with cutoff frequency of 10Hz and 15Hz?

Make the appropriate changes to get the cascaded filter you want.

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MATLAB: IIR Bandstop (Notch) Filter design

MATLAB: How to design FIR lowpass filter with cutoff frequency, fc1 = 20 Hz and FIR bandpass filter with cutoff frequency fc2 = 10 Hz and fc3 = 35 Hz.

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