Silence detection identifies periods when no speech is occurring during a call. It serves multiple purposes including turn-taking decisions, handling dropped calls, and detecting when callers may need assistance.
How does silence detection work?
The system monitors audio levels and uses voice activity detection to distinguish silence from speech. Configurable thresholds determine how long silence must continue before triggering actions. Different contexts may require different sensitivity, from brief pauses during turn-taking to extended silence that suggests problems.
Why does silence detection matter?
Extended silence usually indicates something is wrong. The caller may be confused, distracted, or waiting for something. Detecting and responding to silence improves the experience: offering help, rephrasing questions, or checking if the caller is still there. It also enables proper turn-taking timing.
Silence detection in practice
After asking for the caller’s date of birth, the AI detects 5 seconds of silence. Rather than waiting indefinitely, it responds: “Take your time. If you need me to repeat the question or have any trouble, just let me know.” This proactive response helps confused callers without seeming impatient.