public Builder setMicrophoneDistance(
        com.google.cloud.speech.v1.RecognitionMetadata.MicrophoneDistance value) {
      if (value == null) {
        throw new NullPointerException();
      }
      bitField0_ |= 0x00000004;
      microphoneDistance_ = value.getNumber();
      onChanged();
      return this;
    }
<pre>
The audio type that most closely describes the audio being recognized.
</pre>

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

@param value The microphoneDistance to set.
@return This builder for chaining.
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/RecognitionMetadata.java