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Outputs of the proposed sparse decomposition approach
a Original ECG signal taken from a mitbiha record 208 containing BW, narrow and wide QRS complexes
b Extracted BW xB[n] plus PLI signal xP[n]
c Extracted LF signal xL[n] including the P-wave, LF components of QRS complex, and T-wave
d Extracted HF xH[n] including the high-slope portions of QRS complex and spike components
e Filtered signal y[n] = xL[n] + xH[n] after discarding the xB[n] and xP[n]
