Power spectra accuracy improvement by a method for leakage effect reduction

A method for leakage effect reduction by a modification of the classical spectra obtained Discrete Fourier Transform is proposed. The properties of the new method are investigated analytically and validated through synthesized signals, processed by the developed complete computational procedure. This combines the proposed method for leakage reduction and our previous approach for optimal epoch selection, enabling more accurate spectral analysis of relatively short epochs of various biomedical and other signals. An application of heart rate variability to power spectra is presented.