return values now

app.py

@@ -15,7 +15,8 @@ def get_pitch(audio_data):
     try:
         pitch = call(sound, "To Pitch", 0.0, 75, 500)
         pitch_values = pitch.selected_array['frequency']
-        return "Pitch frequencies: " + str(pitch_values)
+        # return "Pitch frequencies: " + str(pitch_values)
+        return pitch_values
     except Exception as e:
         return "Error in pitch extraction: " + str(e)