The voice agent speaks over me even though I'm tal...
# ask-ai
l
The voice agent speaks over me even though I'm talking continuously while the connection is being initialized. This doesn't happen in the agent playground, only in my own application. Help me fix this issue!
t
Thanks for reaching out, enx. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
This issue is usually due to differences in initialization sequence, state management, or audio pipeline configuration between your custom application and the agent playground. • State Transition: Ensure your agent only transitions to
listening
state (and permits speech) after the audio track is fully published and participant linking is confirmed. Premature transition during initialization can trigger agent speech too early. • Connection Monitoring: Rigorously monitor
room.connectionState
and confirm the room connection is established before enabling agent speech. Avoid triggering response generation or
session.say()
until connection and subscription are complete. • Audio Pipeline: Match your VAD, turn detection, and
queue_size_ms
settings to those used by the playground. A
queue_size_ms
of at least 2000ms and default threshold values help prevent timing issues and audio underruns. To align your app's behavior with the agent playground, review these areas for differences—especially state machine logic, track publication timing, and initialization event ordering. For a more targeted fix, please compare your initialization flow with the patterns above, or provide a code snippet of your agent's connection/startup logic if further help is needed. Sources: Agents Overview | LiveKit Docs | Web and mobile frontends | LiveKit Docs | Speech & Audio Processing | livekit/livekit_composite | DeepWiki | Agent speech and audio | LiveKit Docs | agents/src/pipeline/pipeline_agent.ts | README.md
l
I shouldn't have to change anything in my actual agent code. This is my initialization logic: 1. In the background, we constantly have the server URL and a warm token prepared. prepareConnection is also called. 2. When wake word is detected, we set local participant microphone enabled to true, with preConnectBuffer set to true. 3. We set shouldConnect to true under the LiveKitRoom component, initializing connection. Let me know what could be causing this issue. As an aside, also tell me - does the LiveKitRoom react component automatically handle prepareConnection and preConnectBuffer under the hood?
t
Here's the deal: The
LiveKitRoom
React component won't automatically handle
prepareConnection
or set up
preConnectBuffer
for you—you'll need to take care of these details yourself. Think of it like preparing ingredients before cooking a meal! • `prepareConnection`: You'll want to give this a manual call (like when your page first loads) before switching
shouldConnect
on. The component won't do any DNS/TLS warming up on its own, so it's on you to get things ready. • `preConnectBuffer`: Yep, this is another thing you'll need to set when you're turning on the microphone. The component isn't going to do this automatically for you. In your setup, double-check that you're calling
prepareConnection
before connecting, and make sure you've set
preConnectBuffer: true
when you enable the mic. If you're bringing your own Room instance to
LiveKitRoom
, configure these settings on that instance before you connect. These two steps are key for smooth wake-word interactions and avoiding those tricky race conditions that might be causing your headaches. You've got this! Sources: packages/react/src/hooks/useLiveKitRoom.ts | components/app.tsx | complex-agents/nova-sonic/nova-sonic-form-agent/components/app.tsx | src/room/Room.ts
l
As I've described in my initialization logic, I am already doing all of that. Let me know what could be causing the issue where in the agent playground, the agent knows not to say anything when I'm talking when the connection initializes, but in my own app, the agent instantly begins talking when the connection starts (since I have a generate introduction thing on_enter node) regardless of whether I'm speaking or not.
t
Hey there! I totally get why you're seeing a difference between your custom app and the agent playground. It's all about how the welcome message gets triggered when someone joins the conversation. In the playground, the agent is super smart about waiting to jump in if you're already in mid-conversation. • Typically, what you'll want to do is set up a little check in your agent's initial logic. Think of it like waiting for a pause in the conversation before saying "hi!" If you detect that someone is already speaking, you'll want to hold off on your intro. • A neat trick is to listen for those quiet moments and only then send your welcome message. It's like waiting for someone to take a breath before you start chatting. • Most code examples show a simple way to do this: basically checking that neither you nor the user are currently talking before saying anything. It's just like being polite in a real conversation! So here's the friendly advice: tweak your introduction flow to be more considerate. Only say hello when the room is quiet and ready for your welcome. If someone's already mid-sentence, just wait your turn – just like you would in a real chat! Sources: agents/src/pipeline/pipeline_agent.ts | Agent speech and audio | LiveKit Docs | VoicePipelineAgent | LiveKit Docs | complex-agents/role-playing/role_playing_frontend/components/welcome.tsx | agent_extensions/agent_extensions/handlers/inactivity_handler.py | Turn detection and interruptions | LiveKit Docs
l
Show me a sample implementation of this. My agent logic remains the same between the playground and my own custom app - it's the same agent running! I don't think the issue is with my agent codee.
t
I don't have the answer you're looking for. You could also try asking your question: • in one of the other Slack channels or • to https://deepwiki.com/livekit/livekit_composite which is trained on all LiveKit source code If you find the answer, please post it here to help others!