Finding time interval between 2 peaks

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Michael Morotto
Michael Morotto 2015-7-12
评论： Star Strider 2015-7-13
I downloaded a sample EKG signal to test some digital filtering techniques in Matlab, but I am unsure of how I could obtain the time interval between 2 peaks. Does anyone know how I could get started with this?

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Star Strider
Star Strider 2015-7-12
If you have the Signal Processing Toolbox, use the findpeaks function. It has a number of name-value pair arguments that make R-wave detection (assuming a Lead II) straightforward. It will require some experimentation.
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Michael Morotto
Michael Morotto 2015-7-13
I don't think I have the Signal Processing Toolbox but I'm going to download it and see if I can get something working. Thank you for taking the time to respond.
Star Strider
Star Strider 2015-7-13
My pleasure.
If you’re doing biomedical signal analysis, the Signal Processing Toolbox is necessary. You will need it for filtering and time-frequency analysis as well as peak-finding.
There are peak-finding routines on the File Exchange as well. (I’ve not used them so I’ve no experience with them.)

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