Create filtering

Author: annakimata

filtering

@@ -0,0 +1,13 @@
+import scipy.signal as sps
+
+def butter_bandpass(lowcut, highcut, fs, order=5):
+  nyq = 0.5 * fs
+  low = lowcut/nyq
+  high = highcut/nyq
+  b, a = sps.butter(order, [low, high], btype = 'bandpass')
+  return b, a
+
+def butter_bandpass_filter(data, lowcut, highcut, fs, order=5):
+  b, a = butter_bandpass(lowcut, highcut, fs, order=order)
+  y = sps.filtfilt(b, a, data)
+  return y