def METHOD_NAME():
    """Test that metric works on real audio signal."""
    _, ref = wavfile.read(_SAMPLE_AUDIO_SPEECH)
    _, deg = wavfile.read(_SAMPLE_AUDIO_SPEECH_BAB_DB)
    assert torch.allclose(
        signal_distortion_ratio(torch.from_numpy(deg), torch.from_numpy(ref)).float(),
        torch.tensor(0.2211),
        rtol=0.0001,
        atol=1e-4,
    )