Voice AI & Real-Time Systems • 10 min read Sub-Second Full-Duplex Conversational Voice AI: Orchestrating LiveKit WebRTC, Deepgram Nova-2, and Real-Time POS State Machines Author: Shaheer Ul Hassan (Muhammad Shaheer) — Agentic AI & Systems Engineer Engineering a sub-500ms full-duplex conversational voice agent in Python integrating LiveKit WebRTC, Silero VAD, Deepgram Nova-2, Groq LPU, and transactional POS state machines. Canonical Resource: https://shaheerulhassan.com/blog/sub-second-full-duplex-voice-ai-livekit-webrtc