public Builder clearAudioEncoding() {
      bitField0_ = (bitField0_ & ~0x00000001);
      audioEncoding_ = 0;
      onChanged();
      return this;
    }
<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 This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/AudioConfig.java