looking for a better way to detect peaks
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Kobi
el 8 de Nov. de 2014
Comentada: Star Strider
el 9 de Nov. de 2014
when using find peaks i get all the litlle peaks under 0.3 is there a way to detect only the 5 peaks? (without manually setting the threshold to be 0.3)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/146029/image.png)
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Star Strider
el 9 de Nov. de 2014
The other best option is likely the 'MinPeakDistance' value. Since you’re likely dealing with highly-filtered QRS complexes, and the rate seems to be regular at about 60 BPM, set 'MinPeakDistance' to about 80% of your sample rate.
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Star Strider
el 9 de Nov. de 2014
You can choose any value you want. I was suggesting 80% since you want to detect only the R waves and not the P or T waves. Your sampling frequency is in Hz (cycles/sec), and a heart rate of 60 BPM is about 1/second. So 80% of your sampling frequency would skip the P and T waves, and even allowing for some variability, would pick up most R waves.
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