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Vol. 123, Issue 12, December 2010, pp.106-117



Fourier Analysis of Normal ECG Signal to Find its Maximum Harmonic Content by Signal Reconstruction


*Satish Chandra BERA, **Rajan SARKAR

*Instrumentation Engineering Section,

Department of Applied Physics, University of Calcutta,

92 A.P.C Road, Kolkata-700009

** Asansol Engineering College, Vivekananda Road,

Asansol-713305, India

E-mail: scb152@indiatimes.com, rajan_maa@rediffmail.com



Received: 3 September 2010   /Accepted: 21 December 2010   /Published: 28 December 2010


Abstract: In any bioelectric signal transmission system, the signal is sampled at a very slow rate and each sample is then digitized and transmitted by modulating with a carrier signal. The maximum harmonic frequency present in any bio-signal helps in selecting the sampling rate so that accurate reconstruction of the signal may be possible. In the present paper the results of a review work on finding the accurate frequency content of normal ECG waves have been reported. The minimum number of harmonics that are requiring for reconstruction of a normal ECG wave has been determined using software based Off-line Fourier analysis technique. From the analysis and reconstruction it has been observed that the minimum number of harmonics require to reconstruct a normal ECG waves is identical in all subjects. The results of this analysis are reported in the paper.


Keywords: ECG wave, Fourier analysis, Maximum harmonic numbers, Off-line analysis, Reconstruction


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