Mirror of StyleTTS2-family checkpoints exported to ONNX for phoonnx, OpenVoiceOS's offline TTS library. StyleTTS2 generates speech conditioned on a style vector that encodes prosody and timbre from a reference clip, which is what enables zero-shot cloning; phoonnx also treats the Kokoro checkpoints (a StyleTTS2 descendant, "misaki"-phonemized) as styletts2-engine voices since they share the same style-vector conditioning contract. See docs/cloning.md for the styletts2_style d-vector mechanism.

This repository holds the raw ONNX weights, config.json files, and (for cloning-capable voices) .bin style vectors consumed by phoonnx's voice_index (styletts2.json); it is not meant to be browsed for voices directly — use phoonnx's voice manager, which resolves voice IDs to the files here.

license: other because the checkpoints in this repository come from different labs with different licenses. phoonnx itself is Apache-2.0.

The two BSC checkpoints are multispeaker. Neither upstream repository ships reference audio, so bsc/es-styletts2 and bsc/ca-styletts2 need a reference clip on every call. Alongside them each directory now carries one <speaker>.bin style blob per named speaker, so the same checkpoint also serves ordinary preset voices:

Each blob is 256 float32 values (ref_p ++ ref_s), the mean of the style encoder's output over four reference clips of that speaker taken from the model's own training corpus. A named speaker still clones when you pass a reference clip. See docs/bsc_multispeaker.md.

The Galician voices are single-speaker: each ships a style.bin default style alongside the style_encoder.onnx used for cloning. They are phonemized with Cotovía notation (not IPA) — see docs/galician.md.

Note the BSC Catalan checkpoint is GPL-3.0-licensed by its authors; this only governs the model weights themselves, not phoonnx (Apache-2.0), which merely loads them.