信号平均心电图的短时傅立叶分析

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1988-11-01 DOI:10.1109/IEMBS.1988.94388

M. Fuller, R. Freedman, S. Lyver, T. B. McLaughlin

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引用次数: 5

摘要

比较有和无晚电位受试者的信号平均心电图(SAEs)。利用50米和100米宽度的窗口，对每个心电图进行短时傅里叶分析。计算了所有sae窗口的每次时移的能量在0 ~ 40hz和40 ~ 120hz之间的频率比。根据使用100 ms窗口计算的能量比，可以将有晚电位(LPs)的细胞与没有晚电位的细胞区分开来

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Short-time Fourier analysis of signal averaged electrocardiograms

Signal averaged electrocardiograms (SAEs) of subjects with and without late potentials were compared. using windows of 50- and 100-m widths, short-time Fourier analysis was performed on each electrocardiogram. Frequency ratios of the energy between 0 and 40 Hz and 40 and 120 Hz were computed for each time shift of the window for all SAEs. Those with late potentials (LPs) could be distinguished from those without LPs on the basis of the energy ratio computed using the 100-ms window.<>

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Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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