Comments on: Removing 60Hz from ECG using digital band stop filter http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/ ScienceProg serves scientific, embedded, biomedical engineering, physics based contents. If you want your article or scientific project to be on this site, do not hesitate to contact and send to scienceprog@gmail.com. Fri, 16 May 2008 07:05:40 +0000 http://wordpress.org/?v=2.5.1 By: ashwinss http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-18846 ashwinss Tue, 13 May 2008 17:29:49 +0000 http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-18846 Hi, I am using digital filters,but since i am new to this concept,i have stuck at one doubt.Please help me out. i am designing a LPF having 6Hz & 30Hz passband & stopband edge freq Also Fs(Sampling) is 512Hz. I have got the filters coefficient by implementing it in matlab but on the site from where i am taking guidance of this topic they have got coeff. in integer forms like //Lowpass FIR filter coefficients for 17 taps to filter > 30Hz static const int coeffslp[9] = { 5225, 5175, 7255, 9453, 11595, 13507, 15016, 15983, 16315 };// I am not getting that how can we get such a large integer no. as a coeff.Is there any scaling process. Please guide me about this Hi,
I am using digital filters,but since i am new to this concept,i have stuck at one doubt.Please help me out. i am designing a LPF having 6Hz & 30Hz passband & stopband edge freq Also Fs(Sampling) is 512Hz. I have got the filters coefficient by implementing it in matlab but on the site from where i am taking guidance of this topic they have got coeff. in integer forms like

//Lowpass FIR filter coefficients for 17 taps to filter > 30Hz
static const int coeffslp[9] = {
5225, 5175, 7255, 9453, 11595, 13507, 15016, 15983, 16315 };//

I am not getting that how can we get such a large integer no. as a coeff.Is there any scaling process.
Please guide me about this

]]> By: scienceprog http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-17625 scienceprog Tue, 04 Dec 2007 21:00:45 +0000 http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-17625 Probably a mistake, but as ECG signal is low freq, it is even enough of 200Hz sampling freq. Probably a mistake, but as ECG signal is low freq, it is even enough of 200Hz sampling freq.

]]> By: Jose http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-17621 Jose Tue, 04 Dec 2007 17:54:22 +0000 http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-17621 The Fs in the zip file is 200, why? The Fs in the zip file is 200, why?

]]> By: ashwiny http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-13938 ashwiny Thu, 23 Aug 2007 08:50:09 +0000 http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-13938 hi i want to remove 50Hz noise of ECG..please help me where i can find the source code..i prefer c language..please help me.. hi
i want to remove 50Hz noise of ECG..please help me where i can find the source code..i prefer c language..please help me..

]]> By: scienceprog http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-9815 scienceprog Tue, 20 Feb 2007 12:02:38 +0000 http://www.scienceprog.com/removing-60hz-from-ecg-using-digital-band-stop-filter/#comment-9815 Just change w0=2*pi*((60)/(fs)); to w0=2*pi*((50)/(fs)); in attached file bellow article. That should help. Just change
w0=2*pi*((60)/(fs));
to
w0=2*pi*((50)/(fs));
in attached file bellow article. That should help.

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