POLQA evaluation score.

webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/signal_processing_unittest.py

Index: webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/signal_processing_unittest.py
diff --git a/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/signal_processing_unittest.py b/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/signal_processing_unittest.py
index 1765a2c515099f3ec0e40ca4ece963c15960632a..7cb088c0d40722de27e3e7cc77e37e95cf49723e 100644
--- a/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/signal_processing_unittest.py
+++ b/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/signal_processing_unittest.py
@@ -14,6 +14,7 @@ import unittest
 import numpy as np
 import pydub
 
+from . import exceptions
 from . import signal_processing
 
 
@@ -65,10 +66,10 @@ class TestSignalProcessing(unittest.TestCase):
     signal = signal_processing.SignalProcessingUtils.generate_white_noise(
         silence)
 
-    with self.assertRaises(signal_processing.SignalProcessingException):
+    with self.assertRaises(exceptions.SignalProcessingException):
       _ = signal_processing.SignalProcessingUtils.mix_signals(
           signal, silence, 0.0)
 
-    with self.assertRaises(signal_processing.SignalProcessingException):
+    with self.assertRaises(exceptions.SignalProcessingException):
       _ = signal_processing.SignalProcessingUtils.mix_signals(
           silence, signal, 0.0)