研究原始心电信号的预处理方法。
The pretreatment method of the electrocardiosignal has been carried on.
原始心电信号的预处理：利用小波降噪函数和滤波器去除电源干扰的高频噪声和基线漂移及抖动等干扰因素；
Original ECG preprocessing:remove noise such as high-frequency power supply and interference factors such as baseline drift by wavelet function and filter;
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