Alias: a smart-speaker "parasite" that blocks your speaker's sensors until you activate it

Alias is an open source hardware/free-open firmware "parasite" that fits over your smart speaker's sensors and fills them with white noise; the Alias has its own (non-networked, user-controlled) mic and speaker and when you speak a magic phrase, the Alias temporarily stops the white noise and transmits your commands to the speaker; Alias also lets you specify strings of commands and other useful utilities that restore control over your smart-speaker to you.

This is the first time I've ever considered getting a smart speaker, but I'd want a version of this thing that also blocks the smart-speaker's network connections except when it is responding to a query that Alias has relayed to it.

Alias acts as a middle-man device that is designed to appropriate any voice activated device. Equipped with speakers and a microphone, Alias is able to communicate and manipulate the home assistant when placed on top of it. The speakers of Alias are used to interrupt the assistance with a constant low noise/sound that feeds directly into the microphone of the assistant. First when Alias recognises the user created wake-word, it stops the noise and quietly activates the assistant with a sound recording of the original wake-word. From here the assistant can be used as normally.

The wake word detection is made with a small neural network that runs locally on Alias, which can be trained and modified through live examples. The app acts as a controller to reset, train and turn on/off Alias.

The way Alias manipulates the home assistance allows to create new custom functionalities and commands that the products were not originally intended for.