https://www.theregister.co.uk/2017/11/15/google_assistant_broadcast_mode/

Vision of a connected speaker in every room to save shouting at the kids when dinner hits the table Google has taken on the might of the intercom industry with a device that makes shouting at your kids to get them to come to the dinner table redundant – for perhaps a couple of hundred dollars.

The company did so on Tuesday with an announcement that its Google Home devices can now broadcast.