i am building agent that asks users questions and ...
# ask-ai
n
i am building agent that asks users questions and listens to their responses. Currently, the agent tends to interrupt users before they've finished speaking. I'd like to increase the silence timeout duration to ensure the agent waits longer before assuming the user has completed their answer.
t
Thanks for reaching out, Mohamed. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
You can adjust the
minEndpointingDelay
parameter in your Virtual Participant Agent (VPA) configuration to increase the silence timeout before the agent assumes the user has finished speaking. By default, this value is typically set to 500ms, but you can set it higher—such as 1000ms (1 second)—to allow longer pauses for users:
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const vpaOptions: VPAOptions = {
  minEndpointingDelay: 1000 // 1 second
};
This change will make your agent wait longer after a period of silence before interpreting the end of the user's response. However, increasing the delay may also make the agent feel slightly less responsive. Adjust the value to best match your application's needs. Let me know if you need information on where to apply this in your codebase or further details on speech-to-text endpointing. Sources: VoicePipelineAgent | LiveKit Docs | Improving voice AI's turn detection with transformers | Configuring turn detection and interruptions | LiveKit Docs
n
iam using session = AgentSession[SessionData]( userdata=userdata, stt=stt, llm=llm, # The main agent's TTS will be used initially # Each agent will set its own TTS when activated vad=vad )
t
Let's talk about customizing your
AgentSession
! You've got some cool options to control how your agent detects when you're done speaking. By using the
min_endpointing_delay
parameter (and optionally
max_endpointing_delay
), you can fine-tune the silence threshold to make conversations feel more natural.
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session = AgentSession(
    vad=vad,
    min_endpointing_delay=1.0,  # for a 1-second silence threshold
    max_endpointing_delay=6.0   # optional, controls maximum wait time
)
Think of it like this: if you want fewer interruptions, try bumping up
min_endpointing_delay
to around 1.0 seconds. It's like giving yourself a bit more breathing room in the conversation. The
max_endpointing_delay
adds another layer of control, so you can really dial in the perfect flow. Pro tip: If you're using a custom voice activity detection (VAD) approach, just make sure these settings match the vibe you want – considering things like background noise and your specific communication style. Sources: agent.py | Configuring turn detection and interruptions | LiveKit Docs | livekit-agents/livekit/agents/voice/audio_recognition.py | How does end-of-utterance detection work in conversations? | VoicePipelineAgent | LiveKit Docs | AI voice agents | LiveKit Docs | VoicePipelineAgent | LiveKit Docs | LiveKit turn detector plugin | LiveKit Docs