I´ve been using your EKG Processor vi and when i input some of my data
i noticed that the EKG peaks appear to have their Time Location
shifted, mainly at the end. I used that formula Time[i] = t0 + dt *
Location[i] and i plot my waveform using time location instead of just
location. Have you experienced that? I´ve attached a part of the
Please, if you could help me, i´d very much appreciate it.
Randall, i´ll test what you asked (the enhanced signal) but i noticed
that on the original ECG signal the peak locations are shifted since
the beginning, but it gets worse as the signal advances in time, that
is, the shift is not always the same size.
Actually, my main corcern is not this shifted time locations, but the
power spectrum. I ran your example and i dont know if im wrong, but
shouldnt the spectrum have just one major peak?
Attached is a copy of the EKG Processor vi with your data in it. I may have modified it some to get the heart rate. The results look good to me. I had to modify the level for the peak detection to eliminate a false peak from the glitch in the middle of your data. I don't not see any shift between the original data and the enhanced data.
Hi, Randall. Thank you for the vi. Considering i´m using almost exactly
your algorithm with the difference that instead of Locations i
calculate Time Locations, do you think that this formula
TimeLocations[i] = t0 + dt*Locations[i] may be the cause of the shift?