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Topic: TimeIntervalResampler element does not resample as it should

Author	Message
Marius Joined: Jun 10, 2013 Posts: 51	Posted: Jul 10, 2013 6:15 PM    Post subject: TimeIntervalResampler element does not resample as it should Hi Jarek, I am working with F_TimeIntervalResampler3 I dont know if there are versions 1 or 2 of this element, as none of them are available in the \"Add\" Menu. I extracted this element from bh-HRV. It has the parameter \"Output rate (Hz)\" But what the parameter actually seems to do is: \"Resample each incoming sample to this number of output samples\" Example: In a snippet sent by mail, I feed 4 samples per second in this element, I set it to \"Output rate (Hz): 8\". It then outputs 8 samples 4 times per second. This could be circumvented if known, but in this configuration the element cannot do what it's used for in heart rate processing: Resampling an uneven sampling rate (RR intervals) to an even one. Important If you modify the element, please do it as F_TimeIntervalResampler4 or something, in order not to break existing designs who work with the current bh-HRV design. Marius
jarek Joined: Oct 22, 2007 Posts: 1073	Posted: Jul 10, 2013 7:12 PM    Post subject: See if this snippet works for you: http://proatech.com/design/TimeIntervalResampler.bpd This is the older version of time interval resampler with simpler interpolation. The TimeIntervaleResampler3 is supposed to do a better job with interpolation, but I am not sure now if it works as expected.
jarek Joined: Oct 22, 2007 Posts: 1073	Posted: Jul 10, 2013 7:27 PM    Post subject: More info about this kind of resampling can be found here: http://www.medscape.com/viewarticle/536280_3