public com.google.protobuf.DurationOrBuilder getSpeechEventTimeOrBuilder() {
      if (speechEventTimeBuilder_ != null) {
        return speechEventTimeBuilder_.getMessageOrBuilder();
      } else {
        return speechEventTime_ == null
            ? com.google.protobuf.Duration.getDefaultInstance()
            : speechEventTime_;
      }
    }
<pre>
Time offset between the beginning of the audio and event emission.
</pre>

<code>.google.protobuf.Duration speech_event_time = 8;</code>
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/StreamingRecognizeResponse.java