utils.py 文件源码

def highpass(data, BUTTER_ORDER=3, sampling_rate=10000, cut_off=500.0):
    Wn = (float(cut_off) / (float(sampling_rate) / 2.0), 0.95)
    b, a = signal.butter(BUTTER_ORDER, Wn, 'pass')
    return signal.filtfilt(b, a, data)