Glossary
What is barge-in?
Definition
Barge-in is a feature that lets a caller interrupt a system's spoken prompt and be heard immediately, without waiting for it to finish. When barge-in is enabled, speaking over the assistant stops its playback and starts listening. It makes voice interactions feel more natural and responsive.
01How barge-in works
The system continuously listens for caller speech even while it is playing a prompt, using voice activity or speech detection. When it detects the caller talking, it halts its own audio and begins processing the new input. Echo cancellation is important so the system does not mistake its own voice for the caller's.
02Barge-in in voice AI
In conversational phone assistants, barge-in lets callers correct, skip ahead, or answer before a prompt finishes, mirroring how people talk. This reduces frustration compared with rigid menus that must play in full. Good barge-in handling is closely tied to turn-taking, deciding when the system should yield the floor.
03Design considerations
Overly sensitive barge-in can trigger on background noise or a cough, cutting off prompts unintentionally. Too little sensitivity forces callers to wait, which feels unnatural. Systems tune detection thresholds and combine acoustic and language cues to balance responsiveness with reliability.
Frequently asked questions
Why does barge-in matter in phone menus?
It lets callers respond or skip ahead without listening to an entire prompt, making the interaction faster and more like a natural conversation.
What can cause false barge-in?
Background noise, coughs, or the system hearing its own audio can trigger a false interruption, which is why echo cancellation and tuned thresholds are important.
Related terms
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