Based on Wigner time-frequency representation,we developed improved time-frequency representation method of signals in the study of ventricular late potential.The signals were represented as energy distribution in time-frequency domain.Due to excellent characteristics of Wigner distribution. it was possible to find the existence of ventricular late potential.But when the input signal is a linear overlapping of two signals,there will be a cross term in the results of Wigner distribution,so that better result...
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