i am running agentsession with these parameters, i...
# ask-ai
f
i am running agentsession with these parameters, i want to ensure i have best quality interruption handling, end of sentence/turn detection and voice activity detection. AgentSession( vad=silero.VAD.load(), stt=deepgram.STT(model="nova-3", language="multi", interim_results=False), # en-US, llm=groq.LLM(model="meta-llama/llama-4-scout-17b-16e-instruct", temperature=0.2), tts=deepgram.TTS(model="aura-2-andromeda-en",sample_rate=24000), ) Is this configuration correct?
t
Thanks for reaching out, Viren. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
Thanks — you're asking whether that AgentSession setup will give best interruption handling, end-of-turn detection, and VAD. Short answer: almost, but add turn detection and enable interim STT. What’s good: •
vad=silero.VAD.load()
— strong VAD with clear start/end events. •
stt=deepgram.STT(model="nova-3", language="multi")
— good multilingual STT. • Your LLM and TTS choices are fine for quality. What to change for best interruption / end-of-turn handling: 1. Enable interim transcripts: ◦ Set
interim_results=True
on Deepgram STT. Interim results are required by turn detection and let the agent react faster and better to partial speech. 1. Add a turn detector model: ◦ Use LiveKit’s turn detector (e.g.,
MultilingualModel
) via
turn_detection=
. It combines VAD, interim STT, and context to predict end-of-turn more accurately than VAD-only endpointing. 1. Optional tuning (helps latency and interruption sensitivity): ◦
preemptive_generation=True
— starts LLM generation while user is still speaking to reduce response latency. ◦
min_endpointing_delay=0.5
and
max_endpointing_delay=6.0
— tune these to balance early responses vs. false cuts. ◦
min_interruption_duration=0.5
/
min_interruption_words=1
— tune to avoid false interruption triggers. Recommended final snippet (minimal):
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session = AgentSession(
  vad=silero.VAD.load(),
  stt=deepgram.STT(model="nova-3", language="multi", interim_results=True),
  llm=groq.LLM(model="meta-llama/llama-4-scout-17b-16e-instruct", temperature=0.2),
  tts=deepgram.TTS(model="aura-2-andromeda-en", sample_rate=24000),
  turn_detection=MultilingualModel(),
  preemptive_generation=True,
  min_endpointing_delay=0.5,
  max_endpointing_delay=6.0,
)
If you want, I can: • Suggest exact values for endpoint/interruption thresholds based on your typical utterance lengths, or • Provide the import/installation lines for the turn detector model. Which would you like? Sources: Turns overview | LiveKit docs | Silero VAD plugin | LiveKit docs | Deepgram STT | LiveKit docs | How does end-of-utterance detection work in conversations? | LiveKit turn detector plugin | LiveKit docs
f
Can u provide me with both, also should turn_detection="vad" be used or multilingual?
t
Thanks — I’ll give you both: (A) import/install & download steps for the turn detector, and (B) recommended numeric values and when to use them. Also: use
turn_detection=MultilingualModel()
(not
"vad"
) for best end-of-turn and interruption handling. A) Install / import / download 1. Install (Python)
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uv add "livekit-agents[turn-detector,silero]~=1.3"
1. Imports in your agent script
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from livekit.agents import AgentSession
from livekit.plugins.turn_detector.multilingual import MultilingualModel
from livekit.plugins import silero
# your STT/LLM/TTS imports (Deepgram, Groq, etc.)
1. Download model weights (run once before starting)
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uv run agent.py download-files
If you use a custom runner, ensure a
download-files
command runs the agent’s downloader (the quickstart shows exact scripts). B) Recommended configuration and numeric tuning Use this minimal recommended session plus tuned thresholds:
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session = AgentSession(
  vad=silero.VAD.load(),
  stt=deepgram.STT(model="nova-3", language="multi", interim_results=True),
  llm=groq.LLM(model="meta-llama/llama-4-scout-17b-16e-instruct", temperature=0.2),
  tts=deepgram.TTS(model="aura-2-andromeda-en", sample_rate=24000),
  turn_detection=MultilingualModel(),
  preemptive_generation=True,
  # endpointing
  min_endpointing_delay=0.5,    # respond quickly when model is confident
  max_endpointing_delay=6.0,    # wait longer if model predicts continuation
  # interruption tuning
  allow_interruptions=True,
  min_interruption_duration=0.5,  # avoid false interrupts from short noises
  min_interruption_words=1,       # require at least one recognized word
)
When to change these values • Noisy environments: increase
min_interruption_duration
to 0.8–1.0s and consider noise suppression upstream. • Fast back-and-forth dialogs (short utterances): lower
min_endpointing_delay
to 0.3s to reduce latency, but test for false cuts. • Very long user monologues: increase
max_endpointing_delay
(8–10s) to avoid premature cutoffs. • Multilingual conversations: keep
language="multi"
and use
MultilingualModel()
. Why choose
MultilingualModel()
over
"vad"
• `vad`: uses silence only — simple and low-resource but causes false cuts or long waits. • `MultilingualModel()`: combines VAD + interim STT + context to predict end-of-turn — far better for natural conversational flow and interruption handling. Use
"vad"
only when STT/interim results are unavailable or you must minimize resources. If you want, I can: • Suggest exact threshold values tailored to sample audio (typical utterance length and SNR), or • Provide the exact
download-files
script contents and where model weights are stored. Which would you prefer? Sources: Turns overview | LiveKit docs | examples/voice_agents | livekit/livekit_composite | DeepWiki | LiveKit turn detector plugin | LiveKit docs | Voice AI quickstart | LiveKit docs
f
yes - Suggest exact threshold values tailored to sample audio (typical utterance length and SNR)
t
Thanks — to give precise thresholds I need two quick samples about your audio environment: 1. Typical user utterance length (average spoken turn): short (0.5–2s), medium (2–6s), or long (6–20s)? 2. Typical SNR / noise level: quiet (SNR > 20 dB), moderate (10–20 dB), or noisy (< 10 dB)? Share those two items and I’ll return exact values for: • min_endpointing_delay / max_endpointing_delay • min_interruption_duration / min_interruption_words • interim buffer / preemptive generation timing suggestions • any recommended noise-suppression or AGC settings.