blue-onnx

Blue ONNX — Text-to-speech inference

This repository is the ONNX model bundle for BlueTTS: fast Hebrew-first multilingual speech synthesis with ONNX Runtime and optional NVIDIA TensorRT engines (see the GitHub repo).

Project home (install, usage, examples, TensorRT): https://github.com/maxmelichov/BlueTTS

Try in the browser: Hugging Face Space — notmax123/Blue · Website: lightbluetts.com

Model description

BlueTTS targets native Hebrew quality (including nikud and disambiguation of common homographs) while staying fast enough for real-time and batch use. The reference codebase also supports English, Spanish, Italian, German, and mixed-language segments in one utterance.

Hebrew G2P at inference uses the renikud ONNX model (model.onnx); download it separately (see below).

Related weights

Download

Repo id is case-sensitive: notmax123/blue-onnx.

hf download notmax123/blue-onnx --repo-type model --local-dir ./onnx_models
wget -O model.onnx https://huggingface.co/thewh1teagle/renikud/resolve/main/model.onnx

Classic CLI equivalent:

huggingface-cli download notmax123/blue-onnx --repo-type model --local-dir ./onnx_models

How to get started

Clone BlueTTS, run uv sync, place the ONNX bundle and model.onnx as in the project README, then use src.blue_onnx.BlueTTS or the examples/ scripts.

Minimal pattern:

import soundfile as sf
from src.blue_onnx import BlueTTS

tts = BlueTTS(
    onnx_dir="onnx_models",
    style_json="voices/female1.json",
    renikud_path="model.onnx",
)
samples, sr = tts.synthesize("Hello, this is a short English sample from BlueTTS.", lang="en")
sf.write("output.wav", samples, sr)

(Adjust PYTHONPATH / imports if you install the package instead of running from a clone.)

Speed (indicative)

Reported reference throughput on tuned setups (see project materials and lightbluetts.com); your hardware, batching, and TensorRT vs ONNX Runtime settings will change these numbers.

Uses

• Hebrew and multilingual TTS from text
• Real-time or offline apps on CPU or GPU
• Audiobooks, accessibility, assistants, and broadcasting pipelines

Citations

BibTeX and paper links are maintained in the BlueTTS README.

License

MIT — see the BlueTTS repository.