How to find the average of peaks in a noisy signal?

I want to find the average values of peaks on my signal. Only using the function "findpeaks()" won't work because its a very noisy signal.

[jonas]

Does it necessarily have to be the actual average? If not, smoothing the signal with a predefined window size before using findpeaks would probably do it.

Also, you may know this already but findpeaks has several optional arguments like 'MinPeakProminence' to avoid finding "false peaks" in a noisy signal.

[Adam Danz]

Do you want to average all of the data within each of your red circles or do you want to average all of the data from all of your red circles?

[Delfim Joao]

thank you so much for responding. Jonas, I tried that but it will just flatten the peaks and the values won't be that much accurate.

Adam, I want the average value of the points inside a single red circle.

[Image Analyst]

Did you try my solution below? Did you even scroll down and see it? I believe it should work. If you attach your data in a .mat file, and explain exactly what the ambiguous "average of peaks" means, I can try it.

Answer 1

[Image Analyst]

To find the average value of all the peaks, why not simply mask and use mean()?

mask = signal < -0.3;
meanValue = mean(signal(mask))

If you need the mean value of each peak individually, use regionprops():

props = regionprops(mask, signal, 'MeanIntensity');
meanValues = [props.MeanIntensity];

[Delfim Joao]

Hey analyst, I saw this and I was looking into it because I've never used this command before. So Basically what I'm trying to do is to plot automatically a graph of force vs the number of pass in the workpiece by taking the average value of the peak each time the tool passes the workpiece on the Force vs time graph. I'm trying to plot something like this:

THANK YOU SO MUCH for your help!!!