TTS randomly skips the first letters of a sentence

Question

I have an app for low vision people that is heavily dependent on TTS. However, for some reason, when I use the talk method, TTS randomly skips the first few letters of the sentence or says the first few letters in the top volume, and the rest in normal volume.

Any idea why this might happen?

This is my current code:

public class SpeechHelper implements TextToSpeech.OnInitListener { private Context context = null; private TextToSpeech tts; public SpeechHelper(Context context) { this.context = context; try { tts = new TextToSpeech(context, this); } catch(Exception e) { Log.e("Phone Features Exception","Couldn't initiate TTS", e); } } @Override public void onInit(int status) { if (status == TextToSpeech.SUCCESS) { tts.setLanguage(Locale.getDefault()); } } public void speak(String s, int mode, String messageID) { Log.d("VOLUME", "getStreamVolume " + am.getStreamVolume(AudioManager.STREAM_MUSIC)); // Always 15 Log.d("VOLUME", "isMusicActive " + (am.isMusicActive() ? "true" : "false")); // Always false Log.d("VOLUME", "isVolumeFixed " + (am.isVolumeFixed() ? "true" : "false")); // Always false Log.d("VOLUME", "isSpeakerphoneOn: " + (am.isSpeakerphoneOn() ? "true" : "false")); // Always false Log.d("VOLUME", "getMode: " + am.getMode()); // Always 0 HashMap<String, String> params = new HashMap<String, String>(); params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, messageID); tts.speak(s, mode, params); } } 

I noticed that the problem always occurs in the next 5 seconds after making a call or when unlocking the phone in the application.

Answer 1

Either you are doing something wrong, or Android is doing something wrong. If I had to put money into it, I would say that it is you.

Start with a simple call.

 tts.speak("the quick brown fox jumps over the lazy dog", tts.QUEUE_FLUSH, null); 

to see if you can reproduce the problem in a test application (I could not). If so, then I will be very interested to know which phone / OS you are working on. Your problem is probably due to truncated lines or something else programmatically messing with the volume.