@java.lang.Override
    public int getMicrophoneDistanceValue() {
      return microphoneDistance_;
    }
<pre>
The audio type that most closely describes the audio being recognized.
</pre>

<code>.google.cloud.speech.v1.RecognitionMetadata.MicrophoneDistance microphone_distance = 4;
</code>

@return The enum numeric value on the wire for microphoneDistance.
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/RecognitionMetadata.java