public static com.google.cloud.texttospeech.v1.StreamingAudioConfig parseFrom(
      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }
<pre>
Optional. Input only. Speaking rate/speed, in the range [0.25, 2.0]. 1.0 is
the normal native speed supported by the specific voice. 2.0 is twice as
fast, and 0.5 is half as fast. If unset(0.0), defaults to the native 1.0
speed. Any other values &lt; 0.25 or &gt; 2.0 will return an error.
</pre>

<code>
double speaking_rate = 3 [(.google.api.field_behavior) = INPUT_ONLY, (.google.api.field_behavior) = OPTIONAL];
</code>

@return The speakingRate.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/StreamingAudioConfig.java