nqrsdetect

 nqrsdetect - detection of QRS-complexes

   QRS=nqrsdetect(S,fs);

 INPUT
   S       ecg signal data
   fs      sample rate

 OUTPUT
   QRS     fiducial points of qrs complexes


 see also: QRSDETECT

 Reference(s):
 [1]: V. Afonso, W. Tompkins, T. Nguyen, and S. Luo, "ECG beat detection using filter banks,"
     IEEE Trans. Biomed. Eng., vol. 46, no. 2, pp. 192--202, Feb. 1999

 [2]: A.V. Oppenheim, R.W. Schafer, and J.R. Buck,  Discrete-Time Signal
     Processing, second edition, Prentice Hall, 1999, chapter 4.7.3