6b85e48b55
Operator direction: English is the source and stays editable; translations are confirm-only. - samples/translations/: Deal Hunter sample chapter 1 in all 10 Qwen3-TTS languages, named deal_hunter_sample_ch1_<LANG>.json. Single-pass LLM drafts, labelled as such in every file - they are the failure mode the multi-pass design exists to fix, and they double as a bad-case corpus for the Pass 4 critic. - scripts/build_sample_translations.py, with a validator that refuses to write on stray Latin residue, duplicated utterances or a wrong count. It caught three defects in my own draft before it would ship. - specs/27-translation-pipeline-multipass.md - six passes, the point being that Pass 4 must be a separate critic call, not the same call that drafted. - specs/28-ui-language-selection.md - confirm-only translations, English editable, selector scoped to the chapter page, language named on the page because the cookie is per browser. - scripts/render_lang_test.py - renders the translations with each speaker's own voice into <project>/Lang_test/, plus a stitched file per language. Dry run resolves all 12 utterances x 10 languages; 11 of 12 use a cached ICL prompt, Trader Romano falls back to ref_audio. The renderer resolves display names through the alias map rather than by munging strings: the translations say 'Kainda' and the speaker record says 'Kainda Walters Foster Murphy'. String-munging silently produced no voice for Kainda in the first draft - the same failure mode as the speaker-review audit. NOT DONE: no audio rendered. Qwen3-TTS generation on this machine is stalled - /v1/tts accepts the connection and never completes (zero POSTs logged across 17 minutes after a clean restart), while /v1/voice-prompt and /load return 422 immediately, so requests do reach the handler and the block is inside generation. Swap is at 16GB of 17.4GB. Left as a known blocker rather than worked around. Suite: 721 passed, 8 pre-existing.
UmbraAudio Specifications
Index of all specification documents for the UmbraAudio audiobook generation system.
Specifications
| File | Topic | Description |
|---|---|---|
| 00-project-overview.md | Architecture | Pipeline overview, tech stack, data layout |
| 01-parsing.md | Pass 1a | EPUB, PDF, TXT, MD manuscript parsing |
| 02-analysis.md | Pass 1b | BookNLP, character profiling, pronunciation |
| 03-voice-design.md | Pass 2 | Per-character voice reference generation |
| 04-mapping.md | Pass 3 | Text segmentation, speaker attribution, manifests |
| 05-generation.md | Pass 5 | Audio generation, caching, retry, CUDA management |
| 06-normalization-watermarking.md | Post-gen | Audio normalization, ACX compliance, Perth watermark |
| 07-assembly-export.md | Export | M4B, MP3, WAV export via FFmpeg |
| 08-database.md | Database | SQLite schema, entity relationships, CRUD API |
| 09-web-review-ui.md | Web UI | FastAPI + HTMX review interface |
| 10-cli-orchestrator.md | CLI | Click commands, full pipeline orchestration |
| 11-configuration-dependencies.md | Config | Pydantic settings, dependencies, build system |
| 12-quality.md | Quality | MOS, WER, consistency, ACX compliance |
| 18-UmbraTrans.md | Multilingual | Meaning-preserving translation, target voices, and multilingual audiobook production |
| 19-enterprise-control-plane.md | Enterprise | Multi-tenant projects, access control, artifact lineage, and commercial voice library |
| 20-enterprise-database-integration.md | Enterprise DB | Shared-PostgreSQL contract, blockers, cutover phases P1-P4 |
| 21-umbra-system-nodes-tasks-and-changes.md | System | Worker nodes, task assignment, cross-product change management, UI topology |
| 22-releases-and-the-publish-flag.md | Release | The publish flag, pinned artifact sets, post-publication change, and the Deal Hunter lesson |
| 23-speaker-duplicate-detection.md | Speakers | Duplicate-speaker scan, approval-safe merging, and the crowd veto |
| 24-analysis-quality-plan.md | Analysis | Why the ch6 speakers were missed, and a ranked plan to improve attribution |
Quick Reference
Pipeline Passes
1a: Parse → chapters table
1b: Analyze → characters, pronunciation_guide
2: Voices → voice_ref WAVs
3: Map → manifests/*.json
4: Test → sample audio (optional)
5: Generate → audio/*.wav, audio_normalized/*.wav
Export → export/*.m4b, *.mp3
Key Entry Points
| Component | File | Class/Function |
|---|---|---|
| CLI | cli.py |
main Click group |
| Pipeline | orchestrator.py |
run_pipeline() |
| TTS | voices/chatterbox.py |
ChatterboxEngine |
| Segmenter | mapping/segmenter.py |
Segmenter |
| Generator | generation/chapter.py |
ChapterGenerator |
| Normalizer | assembly/normalize.py |
AudioNormalizer |
| Web UI | web/__init__.py |
create_app() |
| Database | database.py |
Database |