2.1 Plot ECG waveforms 2_1, 2_2, and 2_3 that have been provided by your instructor. Waveform characteristics are documented in the associated header2_1.txt ascii file. Identify the source of noise artifact in each waveform.

2.2 With respect to the same waveforms, calculate and plot the power spectral density for each waveform. Noise artifact from two of the waveforms can be minimized through frequency selective filtering. To which waveforms does this apply?

2.3 Minimize the noise artifact from the two waveforms identified in Exercise 2.2. For each Butterworth filter, state the order and cutoff frequencies used. Plot the filtered waveforms

. 2.4 How can the noise artifact of the remaining third waveform be minimized? Provide a theoretical basis for this strategy.

book : medical device technology 2012: A Systems Based Overview Using Engineering standards

author: Gail Dawn Baura