1# Android Automotive VoiceControl reference application 2 3This is a sample voice assistant application that exemplifies how different voice control 4applications can interact with the operating system to implement a set of core 5voice-enabled experiences. 6 7The application requires that the system has an implementation of a 8[text-to-speech engine](https://developer.android.com/reference/android/speech/tts/TextToSpeechService) 9 set as the system's default text-to-speech engine ([TTS_DEFAULT_SYNTH](https://developer.android.com/reference/android/provider/Settings.Secure#TTS_DEFAULT_SYNTH)). 10