public Builder clearAudioContent() {
      bitField0_ = (bitField0_ & ~0x00000001);
      audioContent_ = getDefaultInstance().getAudioContent();
      onChanged();
      return this;
    }
<pre>
The audio data bytes encoded as specified in the request. This is
headerless LINEAR16 audio with a sample rate of 24000.
</pre>

<code>bytes audio_content = 1;</code>

@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/StreamingSynthesizeResponse.java