心电图处理与分析，从文件中读取心电数据，并进行滤波（高通，低通，带通），提取特征信息如：QRS波，分析特定波段数据，等-ECG processing and analysis of ECG data read from the file, and filtering (high pass, low pass, band pass), to extract feature information such as: the QRS wave, analysis of the specific ban