English Companion NX

A 24/7 AI-powered English conversation trainer running as a systemd service on an NVIDIA Jetson Orin NX (16GB). The full voice pipeline goes wake-word detection → voice activity detection → Whisper STT (GPU) → local LLM via Ollama → Coqui VITS TTS (GPU), all loaded once at startup and kept in RAM. On top of the pipeline sits a Zoo architecture: parallel listener agents (GrammarGiraffe, FillerFalcon) emit typed signals per utterance, OrchestratorOctopus prioritises them, and coaching agents deliver targeted feedback without interrupting every error. All models are self-hosted; no cloud dependency, no SSD write budget wasted on audio temps.