用窗函数法hamming设计的FIR数字低通滤波器，能够实现心电信号中随机噪声的去除,Hamming window function method with the design of FIR digital low-pass filter, ECG can be achieved in the removal of random noise

FIR有限冲击滤波算法，可以消除20HZ以上信号，有效的提取人生理特征信号0.1————5HZ-FIR finite impulse filter algorithm, it can eliminate the signal of 20HZ above, the effective extract of human physiological characteristic signal 0.1 5HZ.