A wake word is a specific phrase that activates a voice-enabled system, signaling that the user wants to begin an interaction. In AI voice agent contexts, wake words may trigger attention during calls or activate hands-free devices.
How do wake words work?
Dedicated models continuously monitor audio for the wake word pattern. These models are optimized for low-latency, low-power operation since they run constantly. When detected, the full speech recognition system activates to process the following command. False activation and missed detections must be carefully balanced.
Why do wake words matter?
Wake words provide a clear signal of user intent to interact. They enable hands-free operation where users cannot press buttons. In call contexts, they may help callers get the AI’s attention if they have been placed on hold or the agent is processing something.
Wake word in practice
A voice AI system for hands-free customer service activates on “Hey Service.” An employee in a warehouse says the wake word, then requests information about an order. The AI processes the request and speaks the response. The worker never touches a device, maintaining productivity while getting needed information.