Project Alias is a DIY project that deafens your home voice assistant until you want it to listen to you

Alias is a teachable “parasite” that is designed to give users more control over their smart assistants, both when it comes to customisation and privacy. Through a simple app the user can train Alias to react on a custom wake-word/sound, and once trained, Alias can take control over your home assistant by activating it for you.

When you don’t use it, Alias will make sure the assistant is paralysed and unable to listen by interrupting its microphones.

Follow the build guide on Instructables
or get the source code on GitHub

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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. Alias can be programmed to send any speech commands to the assistant’s speakers, which leaves us with a lot of new possibilities.

Source: Bjørn Karmann › project_alias