说明：  里面包含有几个由MP150采集到的ECG、PPG和心率数据，还有一个能显示ECG和PPG信号波形以及频谱的matlab程序，它还能显示经过五点平滑滤波后的ECG和PPG的波形，程序中有注释。
(Which contains several by the MP150 collected ECG, PPG and heart rate data, and one can show ECG and PPG signal waveform and spectrum matlab program, it can also display after a five-point smoothing filter after the ECG and PPG waveforms program in the Notes.)