采用小波变换会有效去除心电信号噪声，本文根据心电信号的特点,采用了小波闭值去噪和模极大值去噪,这两种方法都达到去噪效果-Using wavelet transform can effectively remove ecg signal to noise, this paper based on the characteristics of ecg signal, the wavelet threshold denoising and closed modulus maxima de-noisin