private void OnDestroy()
{
speechPlugin.RemoveSpeechRecognizerListener();
speechPlugin.DestroySpeechController();
//call this of your not going to used TextToSpeech Service anymore
textToSpeechPlugin.ShutDownTextToSpeechService();
}
private void OnDestroy()
{
RemoveSpeechPluginListener();
speechPlugin.StopListening();
speechPlugin.DestroySpeechController();
}