QUOTE (abi @ Jan 27 2009, 06:28 AM)
Don't invent own QRS detector! Take a look at this paper. The Wisconsin QRS detector was implemented in old Labview.
QUOTE (abi @ Jan 21 2009, 05:08 AM)
I want to measure heart rate and heart rate variabilty- time difference between (R-R intervals) using a capactively coupled ECG.
After robust QRS detection is implemented, you then need to decide what you really want from HRV. Options are 1) time domain measures, 2) requency domain measures and 3) joint time-frequency domain measures.
Good luck!