code: def test_convert_decibels_to_amplitude_ratio(self):
      amplitude_ratio = convert_decibels_to_amplitude_ratio(decibels=-6)
      assert amplitude_ratio == pytest.approx(0.5011872336272722)
  
      amplitude_ratio = convert_decibels_to_amplitude_ratio(decibels=6)
      assert amplitude_ratio == pytest.approx(1.9952623149688795)
  
file_path: audiomentations/tests/test_utils.py
imports: import os
  import numpy
  import pytest
  from audiomentations.core.utils import calculate_desired_noise_rms, convert_decibels_to_amplitude_ratio, find_audio_files_in_paths, calculate_rms, calculate_rms_without_silence
  from demo.demo import DEMO_DIR
label_desc: Use image node_id 2 for calling the TestUtils obj's underlying member method code with example usage: obj.test_convert_decibels_to_amplitude_ratio() without return types