code: def test_try_add_digital_silence(self):
      samples = np.sin(np.linspace(0, 440 * 2 * np.pi, 40000)).astype(
          np.float32
      )
      sample_rate = 48000
      augmenter = Compose(
          [
              AddBackgroundNoise(
                  sounds_path=os.path.join(DEMO_DIR, "digital_silence"),
                  min_snr_db=15,
                  max_snr_db=35,
                  p=1.0,
              )
          ]
      )
  
      with warnings.catch_warnings(record=True) as w:
          # Cause all warnings to always be triggered.
          warnings.simplefilter("always")
          samples_out = augmenter(
              samples=samples, sample_rate=sample_rate
          )
  
          assert "is too silent to be added as noise" in str(
              w[-1].message
          )
  
      assert np.allclose(samples, samples_out)
      assert samples_out.dtype == np.float32
  
file_path: audiomentations/tests/test_add_background_noise.py
imports: import json
  import os
  import pickle
  import random
  import warnings
  import numpy
  import pytest
  from audiomentations import AddBackgroundNoise, Compose, Reverse
  from demo.demo import DEMO_DIR
label_desc: Use image node_id 5 for calling the TestAddBackgroundNoise obj's underlying member method code with example usage: obj.test_try_add_digital_silence() without return types