public static com.google.cloud.texttospeech.v1beta1.StreamingAudioConfig parseFrom(
      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }
<pre>
Optional. The synthesis sample rate (in hertz) for this audio.
</pre>

<code>int32 sample_rate_hertz = 2 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The sampleRateHertz.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/StreamingAudioConfig.java