code: def wavfile_to_examples(wav_file):
    
    from scipy.io import wavfile
    sr, wav_data = wavfile.read(wav_file)
    assert wav_data.dtype == np.int16, 'Bad sample type: %r' % wav_data.dtype
    samples = wav_data / 32768.0  # Convert to [-1.0, +1.0]
    return waveform_to_examples(samples, sr)
docs: Convenience wrapper around waveform_to_examples() for a common WAV format.
  
    Args:
      wav_file: String path to a file, or a file-like object. The file
      is assumed to contain WAV audio data with signed 16-bit PCM samples.
  
    Returns:
      See waveform_to_examples.