an EMG signal code

hello all, I'm new here and need your help >.<

I have An Unbiased, Full-rectifed EMG signal... if this signal reaches threshold of 1 it goes ZERO .. else it continues summing until reaching 1 then it resets to zero and so on. Now I could come up with filtration and unbias code... but stuck at the condition and For loop...

Any Help? :)

Answer 1

[nick]

Hi Risso,

You can iterate over the signal to apply the threshholding logic as shown below:

emg_signal = [0.2, 0.3, 0.4, 0.5, 0.2, 0.7, 0.1, 0.6, 0.3, 0.5, 0.8]; 
% Initialize variables
    threshold = 1;
    cumulative_sum = 0;
    processed_signal = zeros(size(emg_signal));
    
    % Iterate over each sample in the EMG signal
    for i = 1:length(emg_signal)
        % Add the current sample to the cumulative sum
        cumulative_sum = cumulative_sum + emg_signal(i);
        
        % Check if the cumulative sum reaches the threshold
        if cumulative_sum >= threshold
            % Reset the cumulative sum
            cumulative_sum = 0;
            % Set the output to zero
            processed_signal(i) = 0;
        else
            % Otherwise, set the output to the current cumulative sum
            processed_signal(i) = cumulative_sum;
        end
    end
 disp(processed_signal);

    0.2000    0.5000    0.9000         0    0.2000    0.9000    1.0000         0    0.3000    0.8000         0

Hope this helps.