说明：  脉搏波的准确测量是实现血氧饱和度准确测量的基础。基于DSP的脉搏血氧饱 和度测量仪，采用数字信号处理算法，可取得良好的测量效果。针对脉搏波的测量， 本文提出了几种处理算法。
(Accurate measurement of pulse wave is to achieve accurate blood oxygen saturation measurement. DSP-based pulse oxygen saturation measuring instrument, digital signal processing algorithms can achieve good measurement results. Pulse wave for measurement, this paper presents several processing algorithms.)