Android: After speaking keyword onPartialResult method running again and again never getting result

[sarah]

I'm building application that listens for keyword in service for this I'm using sphinx, I noticed that when I speak keyword the onPartialResult method runs again and again and never able to run onresult so that I could do some work, I dnt know about how to configure assets etc, I just downloaded project, Here is my code:

private void runRecognizerSetup() {
        // Recognizer initialization is a time-consuming and it involves IO,
        // so we execute it in async task
        new AsyncTask<Void, Void, Exception>() {
            @Override
            protected Exception doInBackground(Void... params) {
                try {
                    Assets assets = new Assets(VoiceService.this);
                    File assetDir = assets.syncAssets();
                    setupRecognizer(assetDir);
                } catch (IOException e) {
                    return e;
                }
                return null;
            }

            @Override
            protected void onPostExecute(Exception e) {
                if (e != null) {
                    Log.i(LOG_TAG, "Failed to init recognizer ");
                } else {
                    startListening(KWS_SEARCH);
                }
            }
        }.execute();
    }

    private void startListening(String kwsSearch) {
        recognizer.startListening(KWS_SEARCH);
        Log.i(LOG_TAG, "startedlistening");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();

        if (recognizer != null) {
            recognizer.cancel();
            recognizer.shutdown();
        }
    }


    @Override
    public void onPartialResult(Hypothesis hypothesis) {
        if (hypothesis == null)
            return;

        String text = hypothesis.getHypstr();
        if (text.contains(KEYPHRASE)) {
            Toast.makeText(this, "onPartialResult text=" +text,Toast.LENGTH_SHORT).show();
            switchSearch(KWS_SEARCH);


        }
        Log.i(LOG_TAG, "onPartialResult text=" +text);

    }

    /**
     * This callback is called when we stop the recognizer.
     */
    @Override
    public void onResult(Hypothesis hypothesis) {
        if (hypothesis != null) {
            String text = hypothesis.getHypstr();
            Log.i(LOG_TAG, "onResult text=" +text);
            Intent Intent = new Intent(this, ReceiverActivity.class);
            Intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(Intent);

        }

    }

    @Override
    public void onBeginningOfSpeech() {
        Log.i(LOG_TAG, "onBeginningOfSpeech");
        this.timer.schedule(new TimerTask() {

            @Override
            public void run() {
                recognizer.stop();
                Log.i("Runningafter", "runningafter2seco");

            }
        }, 5000);

        this.timer.schedule(new TimerTask() {

            @Override
            public void run() {
                recognizer.startListening(KWS_SEARCH);
                Log.i("startedlisteningagain", "startedlisteningagain");

            }
        }, 5000);

    }


    @Override
    public void onEndOfSpeech() {
        if (!recognizer.getSearchName().contains(KWS_SEARCH))
          //  switchSearch(KWS_SEARCH);
        Log.i(LOG_TAG, "onEndOfSpeech");
    }

    private void switchSearch(String searchName) {
     //   Log.i(LOG_TAG, "switchSearch searchName = " + searchName);

        if (recognizer != null) {
            Log.i("RecognizerNull ", "Null");
            recognizer.stop();
            recognizer.startListening(searchName);
            new java.util.Timer().schedule(
                    new java.util.TimerTask() {
                        @Override
                       public void run() {

                        }
                    },
                    2000
            );

            this.timer.schedule(new TimerTask() {

                @Override
                public void run() {
                    recognizer.startListening(KWS_SEARCH);
                    Log.i("Runningafter", "runningafter2seco");

                }
            }, 10000);
        }
    }



    private void setupRecognizer(File assetsDir) throws IOException {
        // The recognizer can be configured to perform multiple searches
        // of different kind and switch between them

        recognizer = SpeechRecognizerSetup.defaultSetup()

                .setAcousticModel(new File(assetsDir, "en-us-ptm"))
                .setDictionary(new File(assetsDir, "cmudict-en-us.dict"))

                .setRawLogDir(assetsDir) // To disable logging of raw audio comment out this call (takes a lot of space on the device)
                .setKeywordThreshold(1e-45f) // Threshold to tune for keyphrase to balance between false alarms and misses
                .setBoolean("-allphone_ci", true)  // Use context-independent phonetic search, context-dependent is too slow for mobile
                .getRecognizer();

        // Create keyword-activation search.

        recognizer.addKeyphraseSearch(KWS_SEARCH, KEYPHRASE);
        recognizer.addListener(this);




        Log.i(LOG_TAG, "setupRecognizer");
    }

    @Override
    public void onError(Exception error) {
        Log.i(LOG_TAG, "onError " + error.getMessage());
    }

    @Override
    public void onTimeout() {
        switchSearch(KWS_SEARCH);
        Log.i(LOG_TAG, "onTimeout");
    }

[Nickolay V. Shmyrev]

You need to stop listening with recognizer.cancel() immediately after recognizer detected a keyphrase to reset partial result.

[sarah]

you mean in onbegining method?

[Nickolay V. Shmyrev]

in onPartialResult. Actually the original demo did it right. You modified switchSearch with a timer, you should have return that modification back.

[sarah]

In onpartial method I first stop recognizer and then in the next line started recognizer but in this case it recognizes only once

[sarah]

Could you tell me what is threshold for keyword?