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butterworth bandpass filter in python
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| from scipy.signal import butter, lfilter | |
| def butter_bandpass_filter(data, lowcut, highcut, fs, order=5): | |
| nyq = 0.5 * fs | |
| low = lowcut / nyq | |
| high = highcut / nyq | |
| b, a = butter(order, [low, high], btype='band') | |
| y = lfilter(b, a, data) | |
| return y |
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