Update app.py

app.py

@@ -14,6 +14,9 @@ from scipy.signal import butter, lfilter
 
 # ---------------Parameters--------------- #
 
+input_file = 'input_text.wav'
+output_file = 'output_filtered_sender.wav'
+
 low_frequency = 18000
 high_frequency = 19000
 bit_duration = 0.007