Intelligent voice assistants provide powerful functionality for consumers, but require relatively expensive general purpose processors, audio digital signal processors, local hotword detection and voice library modules, and more. To get whole-home voice assistant coverage, consumers typically need to purchase separate, fully functional intelligent voice assistant devices for each room, which gets to be expensive and unwieldy. Each device takes up an outlet and adds bulk to each room. Furthermore, when multiple intelligent voice assistant devices are in close proximity, they may each respond to the same voice input at the same time from a user.
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Chang, Lawrence and Honjo, Shigefumi, "Intelligent Voice Assistant Extended Through Voice Relay System", Technical Disclosure Commons, (August 29, 2018)