macos - Sphinx-4的WAV音频录制失败

Question

我使用Audacity录制了一个wav文件，用于测试Sphinx-4的转录演示，我遵循了这篇文章中的说明:Sphinx4 speech recognition trasncribe demo not working accurately for short wav file

特别是在这个答案中:

It must be 16khz 16bit mono little-endian file. 

之后我什至减少了噪音。但是，当我尝试打印假设时，我得到了空错误，这意味着我的录音有问题:

Loading models...
Exception in thread "main" java.lang.NullPointerException
at transcriber.Transcriber.main(Transcriber.java:41)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 minutes 14 seconds)

我在第41行打印假设。我该怎么做才能使其正常工作？
谢谢

编辑:
代码是:

package transcriber;

import java.net.URL;

import edu.cmu.sphinx.api.Configuration;
import edu.cmu.sphinx.api.SpeechResult;
import edu.cmu.sphinx.api.StreamSpeechRecognizer;
import edu.cmu.sphinx.result.WordResult;

/**
 *
 * @author ha
 */
public class Transcriber {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
System.out.println("Loading models...");

        Configuration configuration = new Configuration();

        // Load model from the jar
        configuration.setAcousticModelPath("resource:/WSJ_8gau_13dCep_16k_40mel_130Hz_6800Hz");
        configuration.setDictionaryPath("resource:/WSJ_8gau_13dCep_16k_40mel_130Hz_6800Hz/dict/cmudict.0.6d");        
        configuration.setLanguageModelPath("models/language/en-us.lm.dmp");

        StreamSpeechRecognizer recognizer = new StreamSpeechRecognizer(configuration);

        URL audioUrl = new URL("file:WAV/Hello.wav");
        recognizer.startRecognition(audioUrl.openStream());

        SpeechResult result = recognizer.getResult();
        System.out.println(recognizer.getResult().getHypothesis());

        while ((result = recognizer.getResult()) != null) {
            System.out.format("Hypothesis: %s\n",
                              result.getHypothesis());
        }

        System.out.println("Stop Recognition..");
        recognizer.stopRecognition();
    }
}

Answer 1

更换

System.out.println(recognizer.getResult().getHypothesis());

与

System.out.println(result.getHypothesis());