948034c365
The rendered sample chapters existed on disk but had no way to be listened to through the UI. New /lang-samples page, reachable from a new SLang nav tab, lists every language chapter with an inline player plus the combined all-languages file. - Serves from <project>/Lang_test, which is where render_lang_test.py writes. Deliberately project_dir and not data_dir: .umbra is gitignored state and the render output lives beside the rest of the project. - Languages are discovered from disk in a fixed order rather than hardcoded, so an unrendered language simply does not appear instead of offering a player that 404s. - The audio path validates a two-to-three letter code and builds the filename server-side, so it cannot be walked out of the sample directory. Verified: %2e%2e and over-long codes are rejected 400, unauthenticated requests 303 to login. - A missing language now 404s rather than falling back to the combined file. It did before, so an unrendered language would silently play the wrong audio - the same class of bug as a stale speaker name resolving to no voice at all. Verified in a browser: 11 players, durations resolve (EN 92.3s, ZH 92.0s, combined 1067.8s), no load errors, range requests 206 so seeking works. routes.py stays at its 76 pre-existing ruff errors. Suite: 721 passed, 8 pre-existing.
UmbraAudio
Quality-first multi-pass audiobook generation from English manuscripts.
Features
- 5-pass pipeline: Analysis → Voice Design → Mapping → Test → Generate
- Multi-engine TTS: Chatterbox (primary), Qwen3-TTS (secondary)
- LLM-enhanced: BookNLP for NLP, LLM for profiling/emotion/pronunciation
- Web review: FastAPI + HTMX at checkpoints for human approval
Quick Start
python -m umbraaudio.cli init <manuscript.epub> --name 'My Book'
python -m umbraaudio.cli analyze
python -m umbraaudio.cli voices
python -m umbraaudio.cli review
Requirements
- Python 3.11+
- NVIDIA GPU with CUDA support (RTX 3060 or better recommended)
- ffmpeg
Development
pip install -e ".[dev]"
ruff check umbraaudio/
pytest tests/ -v
Commit cadence: commit at least once every Sunday. Never leave a week (let alone a month) of work uncommitted — a single accidental
git checkouton 2026-09-20 wiped out a month of changes toumbraaudio/web/routes.py. SeeAGENTS.md→ Commit Cadence.
scripts/commit_check.sh enforces the nudge: it exits non-zero once the tree has been dirty
longer than a week. The LaunchAgent com.umbraaudio.commitcheck runs it every Sunday at
18:00 and posts a macOS notification when there is uncommitted work.
scripts/commit_check.sh # warn if dirty > 7 days
scripts/commit_check.sh --days 3 # tighter threshold
scripts/commit_check.sh --any # warn on any uncommitted change
Rebuilding from source
The repo tracks source only; large runtime data is reconstructed as needed.
-
Models: weights are not committed (see
.gitignore). Download them:bash scripts/download_models.sh # ~9 GB, targets ./models -
Qwen3-TTS is a git submodule pinned to upstream commit
022e286:git submodule update --init --recursiveThe
tts_server/web-demo backend includes a local UI customization toqwen_tts/cli/demo.py. It is preserved as a patch — reapply it after checking out the submodule:cd Qwen3-TTS && git apply ../scripts/qwen3_tts_demo_umbra_patch.patch -
Environment: copy/keep
.env(contains secrets) and setUMBRA_TTS__*model paths undermodels/.
Book projects (e.g. DealHunterShip_...) are committed separately under their
own project directories and are not part of this program repository.