Speech

GAST has some helpful utilities to help you implement speech recognition and Text-to-Speech.

Some cool speech things you can do with GAST

Add speech recognition and Text-to-Speech to your app quickly by extending the abstract SpeechRecognizingAndSpeakingActivity class.
Run direct speech recognition using SpeechRecognizer
Run direct speech recognition continuously using SpeechRecognizer and a service. For this you need to use WordActivator and SpeechActivatorService
Use a framework to execute sequences of speech commands using VoiceActions and VoiceActionExecutor
Improve recognition accuracy and recognize words Google's recognizer can't understand by using phonetic matching and stemming algorithms. Various algorithms are here
Search a database for matches with recognized speech using FTS or Lucene