Delay when using android.speech.SpeechRecognizer in DICTATION_MODE

AndroidSpeech Recognition

Android Problem Overview

I'm using android.speech.SpeechRecognizer in DICTATION_MODE to recognize commands during a long period of time. In this mode the call to the callback method onPartialResults delays much more than in normal mode. Does anybody know why this happen and how to avoid this delay?

This is the configuration I use for the SpeechRecognizer:

Intent recognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        
recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
recognizerIntent.putExtra("calling_package", mainActivity.getApplicationContext().getPackageName());
recognizerIntent.putExtra("android.speech.extra.DICTATION_MODE", true);
recognizerIntent.putExtra(RecognizerIntent.EXTRA_PARTIAL_RESULTS, true);
recognizerIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 100);

Android Solutions

Solution 1 - Android

The problem may be because of the internet speed.

Try to set EXTRA_PREFER_OFFLINE to true and check whether the delay will be reduced

https://developer.android.com/reference/android/speech/RecognizerIntent.html#EXTRA_PREFER_OFFLINE

Solution 2 - Android

Response time depends on many factors, such as:

  • device characteriscics
  • OS version
  • internet speed

And in common it is longer because this mode implies guessing the context and try to figure out meaning of that changes with each new word.

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionacimutalView Question on Stackoverflow
Solution 1 - AndroidGrountexView Answer on Stackoverflow
Solution 2 - AndroidConstantin ChernishovView Answer on Stackoverflow