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  StackOverflow 文档
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  ibm-watson-cognitive 教程
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  演讲文本
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  使用 Java 中的 WebSockets 识别音频文件
使用 Java-SDK 3.0.1
CountDownLatch lock = new CountDownLatch(1);
SpeechToText service = new SpeechToText();
service.setUsernameAndPassword("<username>", "<password>");
FileInputStream audio = new FileInputStream("filename.wav");
RecognizeOptions options = new RecognizeOptions.Builder()
    .continuous(true)
    .interimResults(true)
    .contentType(HttpMediaType.AUDIO_WAV)
    .build();
service.recognizeUsingWebSocket(audio, options, new BaseRecognizeCallback() {
  @Override
  public void onTranscription(SpeechResults speechResults) {
    System.out.println(speechResults);
    if (speechResults.isFinal())
      lock.countDown();
  }
});
lock.await(1, TimeUnit.MINUTES);