Can we add custom language for RecognizerIntent?
I have search many SO Question like https://stackoverflow.com/questions/2080401/is-there-a-speech-to-text-api-by-google<
I don't know for sure but have you tried using RecognizerIntent?
See reference, there is a section to specify the IETF language see this section.
There is also this api demo code which you could try: http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/app/VoiceRecognition.html
I really don't know if Burmese is supported as it certainly is not listed as one of the default locales but speech recognition is different.
Have just found this project: http://code.google.com/p/recognizer-intent/ it is probably highly unlikely that Burmese will be supported out of the box but I think it is worth trying the api demo code and seeing what it says in the drop down box, good luck.