@java.lang.Override
  public int getAudioEncodingValue() {
    return audioEncoding_;
  }
<pre>
Required. The format of the audio byte stream.
</pre>

<code>
.google.cloud.texttospeech.v1.AudioEncoding audio_encoding = 1 [(.google.api.field_behavior) = REQUIRED];
</code>

@return The enum numeric value on the wire for audioEncoding.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/AudioConfig.java