我在 android 上使用 pocketsphinx 来发现一个关键字,但它不能识别除所需关键字之外的任何其他关键字。此外,它甚至不等我说话并在 logcat 中显示关键字。
这是我的代码:
public class SpeechService extends Service implements RecognitionListener {
private static final String TAG = "myTag";
private static final String KWS_SEARCH = "wakeup";
private static final String KEY_PHRASE = "hello";
private SpeechRecognizer recognizer;
private PowerManager.WakeLock lock;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
super.onDestroy();
recognizer.cancel();
recognizer.shutdown();
lock.release();
}
@Override
public int onStartCommand(Intent data, int flags, int startId) {
new AsyncTask<Void, Void, Exception>() {
@Override
protected Exception doInBackground(Void... params) {
try {
Assets assets = new Assets(SpeechService.this);
File assetDir = assets.syncAssets();
setupRecognizer(assetDir);
} catch (IOException e) {
return e;
}
return null;
}
@Override
protected void onPostExecute(Exception result) {
if(result == null)
recognizer.startListening(KWS_SEARCH);
}
}.execute();
return START_STICKY;
}
private void setupRecognizer(File assetsDir) throws IOException {
// The recognizer can be configured to perform multiple searches
// of different kind and switch between them
recognizer = defaultSetup()
.setAcousticModel(new File(assetsDir, "en-us-ptm"))
.setDictionary(new File(assetsDir, "cmudict-en-us.dict"))
//.setRawLogDir(assetsDir)
.setKeywordThreshold(1e-40f)
.setBoolean("-allphone_ci", true)
.getRecognizer();
recognizer.addListener(this);
// Create keyword-activation search.
recognizer.addKeyphraseSearch(KWS_SEARCH, KEY_PHRASE);
}
@Override
public void onBeginningOfSpeech() {
//Log.i(TAG, "onBeginningOfSpeech");
}
@Override
public void onEndOfSpeech() {
//Log.i(TAG, "onEndOfSpeech");
if(!recognizer.getSearchName().equals(KWS_SEARCH)) {
recognizer.cancel();
recognizer.startListening(KWS_SEARCH);
}
}
@Override
public void onPartialResult(Hypothesis hypothesis) {
//Log.i(TAG, "onPartialResult");
if(hypothesis == null)
return;
String result = hypothesis.getHypstr();
Log.i(TAG, "result = " + result);
recognizer.cancel();
recognizer.startListening(KWS_SEARCH);
}
@Override
public void onResult(Hypothesis hypothesis) {
//Log.i(TAG, "onResult");
}
@Override
public void onError(Exception e) {
Log.i(TAG, "onError");
recognizer.startListening(KWS_SEARCH);
}
@Override
public void onTimeout() {
Log.i(TAG, "onTimeout");
recognizer.startListening(KWS_SEARCH);
}
}
这是我还没说话时的 Logcat。
result = hello
result = hello
result = hello hello
result = hello
result = hello hello
result = hello
等等...
我究竟做错了什么???