心电信号的预处理。高通滤波器，低通滤波器，50Hz带阻滤波器。-The preprocessing of the ECG signal. High-pass filter, low pass filter, 50Hz band-stop filter....

本文通过设计一个Butterworth低通滤波器（通带截止频率wp,阻带截止频率ws,通带最大衰减Rp,阻带最小衰减Rs）实现了对受工业高频干扰的人体心电图信号的滤波-matlab

FIR函数通过定义的系数和延时线来实现有限脉冲响应FIR滤波器。该函数产生了对输入数据的响应。该过滤器（通带，阻带等特点）由系数和抽头数决定。-FIR function by defining the coefficients and delay line to achieve the finite impulse response FIR filter. The function of the input data generated response. The filter (passban

利用窗函数设计低通滤波器，使其通带为1MHZ，阻带为小于40dB。-Using window function to design the low-pass filter, its passband is 1MHZ and stopband is less than 40dB.