code: def _getWavData(self):
      with self.cached_session():
          sample_data = tf.zeros([32000, 2])
          wav_encoder = tf.audio.encode_wav(sample_data, 16000)
          wav_data = self.evaluate(wav_encoder)
      return wav_data
  
file_path: tensorflow/tensorflow/examples/speech_commands/wav_to_features_test.py
imports: import os
  import tensorflow
  from tensorflow.examples.speech_commands import wav_to_features
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the WavToFeaturesTest obj's underlying member method code with example usage: obj._getWavData() and returns: wav_data