Did you try the example app and experiment using your microphone? Parrot can provide continuous recognition (more or less) or not depending on how you use it
Do you know the SpeechRecognizer must be used with microphone input. The SpeechRecognizer cannot be used with an audio file.
You already noted several possible ways for continuous voice recognition using extensions. What more do you want? They provide various ways of dealing with the limitations of Google speech recognition.