在槽型优选测试系统实验的基础上，我们引入了信号分析工具——功率谱分析，作为评估槽型优劣的一个标准。
Based on the groove testing system, we induced the spectral analysis which is the signal analysis tool into evaluating the grooves, and used it as an evaluating standard.
但目前心率变异性信号的分析法主要是功率谱分析法，复杂性分析法不多，而麻醉期HRV信号的复杂性分析则更少。
However, presently the main analyzing methods of HRV are spectral analysis, while complexity analysis of HRV is less, and complexity analysis of HRV signal during anaesthesia is much more less.
文中介绍了基于数字滤波的低频随机信号实时功率谱分析仪的实现方法，并给出了实时算法的设计要点。
In this paper, a real time power spectrum analyzer of low frequency random signal based on digital filters is introduced, and a design method of real time arithmetic is given.
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