sonus

Why we included this project

Sonus is a small Node library for adding a wake word to a project without keeping a cloud connection open the whole time. It listens offline for a customizable hotword via Snowboy, and only after that keyword is heard does it stream the following speech to a cloud recognizer like Google Cloud Speech, returning results in real time. You wire up a recognizer client, register your hotword model, and subscribe to events such as hotword and final-result. That fits nicely in home-automation assistants or voice-controlled hardware on a Raspberry Pi, where you want an always-on listener that does not spend cloud credits on silence. It targets Linux and macOS, needs SoX or arecord installed, and custom hotword models are trained through Snowboy's online service.