Local speech experiments with reproducible inputs and scoring. One workflow transcribes mixed Chinese–English clips with no, a correct or an unrelated glossary; on 200 frozen ASCEND clips (600 CPU runs) the correct glossary did not recover missed terms, and the small drop in error rate was within noise. The other separates two overlapping speakers, matches them, transcribes with Qwen and writes meeting notes with Ollama.

A keyboard-first, self-hosted workbench for translation quality assessment and speech transcription review. Blind golden sets, append-only audit trails, an LLM judge that must be calibrated before use, and content-hashed exports are part of the data model.

Open-weight TTS and ASR run as a production-style AWS service: Kokoro-82M text-to-speech on ECS Fargate (Graviton), a CPU Whisper transcription endpoint, infrastructure in AWS CDK, keyless OIDC CI/CD, and a GPU LoRA fine-tuning track.

Real-time Chinese–English interpretation for medical phone calls, built on Twilio Media Streams and the OpenAI Realtime API, with a live web dashboard and auto-generated SOAP notes. First-token latency is about 400–800 ms end to end.

A wellness web app built around a 27-question Traditional Chinese Medicine constitution screening, scored with the GB/T 46939-2025 standard. Users ask follow-up questions; AI drafts diet, exercise and lifestyle guidance, and a Wellness Advisor reviews every answer before it is shown. Emergency symptoms block the form and point to 911 / 988.

Live at qiorazen.com.