slug-tts-stt: giving a mini-PC ears and a mouth, on two different chips

Thu, 06 Aug 2026 00:00:00 +0000

A voice assistant needs two things from its hardware: it must hear you and it must answer you. On a single-box setup those workloads fight for the same chip — unless you deliberately split them. That’s the whole idea here: STT runs on the XDNA2 NPU (Whisper large-v3-turbo via FastFlowLM), TTS runs on the Radeon 840M iGPU (Qwen3-TTS 1.7B via qwentts.cpp/Vulkan). Both exposed as OpenAI-compatible HTTP endpoints on your LAN. The reasoning brain lives elsewhere; this box is only ever the audio edge.

Stt on AiSlackin

slug-tts-stt: giving a mini-PC ears and a mouth, on two different chips