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我正在尝试在语音识别时进行自定义对话，而不是使用官方对话。我得到了那个部分，但是当我决定在识别时显示声音的幅度，以使其更花哨，就像 Google Now 搜索栏所做的那样（它围绕麦克风的圆圈会随着声音变大而变大）：

谷歌现在

然后我开始编写如何获取声音幅度的代码，最后我用 AudioRecord 类得到了它。

当我尝试混合两者（SpeechRecognizer 和 AudioRecord）时，问题就出现了，因为他们似乎无法共享麦克风，或者类似的东西......

在 logcat 我有这个错误：

03-03 21:16:07.461: E/ListenerAdapter(23359): onError
03-03 21:16:07.461: E/ListenerAdapter(23359): com.google.android.speech.embedded.Greco3RecognitionEngine$EmbeddedRecognizerUnavailableException: Embedded recognizer unavailable
03-03 21:16:07.461: E/ListenerAdapter(23359):   at com.google.android.speech.embedded.Greco3RecognitionEngine.startRecognition(Greco3RecognitionEngine.java:108)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.lang.reflect.Method.invokeNative(Native Method)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.lang.reflect.Method.invoke(Method.java:511)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at com.google.android.searchcommon.utils.ThreadChanger$1$1.run(ThreadChanger.java:77)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:390)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.util.concurrent.FutureTask.run(FutureTask.java:234)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:153)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
03-03 21:16:07.461: E/ListenerAdapter(23359):   at com.google.android.searchcommon.utils.ConcurrentUtils$2$1.run(ConcurrentUtils.java:112)

还有一些时候我有这个：

03-03 21:47:13.344: E/ListenerAdapter(23359): onError
03-03 21:47:13.344: E/ListenerAdapter(23359): com.google.android.speech.exception.AudioRecognizeException: Audio error
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.embedded.Greco3Recognizer.read(Greco3Recognizer.java:107)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at dalvik.system.NativeStart.run(Native Method)
03-03 21:47:13.344: E/ListenerAdapter(23359): Caused by: java.io.IOException: couldn't start recording, state is:1
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.audio.MicrophoneInputStream.ensureStartedLocked(MicrophoneInputStream.java:119)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.audio.MicrophoneInputStream.read(MicrophoneInputStream.java:159)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.common.io.ByteStreams.read(ByteStreams.java:806)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.audio.Tee.readFromDelegate(Tee.java:374)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.audio.Tee.readLeader(Tee.java:267)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.audio.Tee$TeeLeaderInputStream.read(Tee.java:464)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at java.io.InputStream.read(InputStream.java:163)
03-03 21:47:13.344: E/ListenerAdapter(23359):   at com.google.android.speech.audio.AudioSource$CaptureThread.run(AudioSource.java:193)

这就是我启动两者的方式：

//previously in constructor
speechrec = SpeechRecognizer.createSpeechRecognizer(getActivity());
speechrec.setRecognitionListener(this);
//

public void launchListening()
{       
    if (speechrec.isRecognitionAvailable(getActivity()))
    {
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        speechrec.startListening(intent);       
    }

    bufferSize = AudioRecord.getMinBufferSize(sampleRate, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);// * bufferSizeFactor;
    audio = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);
    audio.startRecording();

    captureThread = new Thread(new Runnable()
    {
        public void run()
        {
            //calculate amplitude here
        }
    });
    captureThread.start();
}

关于如何为语音识别创建自定义对话框的任何想法，我可以像谷歌那样根据噪声显示幅度？

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1 回答 1

3

这样做的方法是注册一个监听器SpeechRecognizer并可视化onRmsChanged的​​输出。但请注意：

不保证会调用此方法。

所以你使用的语音识别器需要支持这种方式。请注意，返回值SpeechRecognizer.createSpeechRecognizer(getActivity())取决于用户设备的配置。

（您不能AudioRecord在SpeechRecognizer录制时开始，反之亦然。）

于 2013-03-04T09:06:48.763 回答