Voice control, which combines speech recognition and natural language processing, is quickly becoming the key user interface within the smart home. Voice control systems will dominate smart homes in the future and more than 120 million voice - controlled devices will connect annually by 2021 , according to ABI Research . A range of microphone - enhanced devices , including TVs , plugs , doorbells and refrigerators , will hear voice commands , but combining listening and voice - controlled devices will need a coherent smart home system with a shared voice platform . Currently , the primary home voice control providers , Apple , Amazon and Google , have proprietary rather than standardised systems .
Voice control systems will dominate smart homes in the future and more than 120 million voice - controlled devices will connect annually by 2021 , according to ABI Research . A range of microphone - enhanced devices , including TVs , plugs , doorbells and refrigerators , will hear voice commands , but combining listening and voice - controlled devices will need a coherent smart home system with a shared voice platform . Currently , the primary home voice control providers , Apple , Amazon and Google , have proprietary rather than standardised systems .