Hi, I am trying to plot an FFT for an EMG signal which is saved in a text file. I did manage to plot the actual signal, but when I plotted the FFT, the window remained blank. Can someone please highlight what I am doing wrong. Also, How to determine the sampling frequency value (Fs)?
Attached please find the text file containing the EMG signal data. Thanks in advance.
Ts = mean(diff(t)); % Sampling TimeFs = 1/Ts; % Sampling FrequencyFn = Fs/2; % Nyquist FrequencyFEMG = fft(EMG)*2/L; % Fourier Transform (Normalised)Fv = linspace(0, 1, fix(L/2)+1)*Fn; % Frequency VectorIv = 1:length(Fv); % Index Vectorfigure(1)plot(Fv, abs(FEMG(Iv)))grid