心动的信号
心动的信号-
利用现代谱分析法，随机选取受测者40个连续心动周期的脉象信号，分别对每一心动周期的脉象信号作现代功率谱估计得到40幅功率谱图，取其平均值得到平均功率谱。
The author select a series of pulse signals randomly which contains 40 consecutive cardiac cycles of subject and using a modern spectrum analysis method to estimate the power spectrum of data in every cardiac cycle . An average power spectrum is obtained through averaging such 40 power spectra .