Update highPassFilter.py

highPassFilter.py

@@ -4,5 +4,5 @@ def high_pass_filter(audio, sr, cutoff=300):
     nyquist = 0.5 * sr
     normal_cutoff = cutoff / nyquist
     b, a = butter(1, normal_cutoff, btype='high', analog=False)
-    filtered_audio = lfilter(b, a, audio)
+    filtered_audio = filter(b, a, audio)
     return filtered_audio