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ADR 0008 TTS Engine
Zlatko Lakisic edited this page Aug 7, 2026
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1 revision
Status: Proposed (TTS.0 partially verified)
Date: 2026-08-07
Milestone: M6 / TTS.0–TTS.8
Hallway listening makes Piper feel synthetic. Kokoro on the AI server is the intended Tier-1 voice; Piper remains on-Pi Tier-2.
- Primary live TTS: Kokoro over OpenAI-compatible
POST /v1/audio/speech. - Fallback: Pi Piper with turn-boundary failover only.
- Fixed greetings: bake with Kokoro at build time.
Full text: docs/adr/0008-tts-engine.md in the main repo.
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