# Orpheus TTS — PT-BR LoRA Fine-tuning (Unsloth)

LoRA fine-tuning of **Orpheus 3B** ([canopylabs/3b-es_it-ft-research_release](https://huggingface.co/canopylabs/3b-es_it-ft-research_release)) via [Unsloth](https://github.com/unslothai/unsloth), run `artoodtoo_ft_e3`. Training continued from the PT-BR adapter **[ArtooDtoo/Orpheus_PTBR_FT_Unsloth_Chk-1800](https://huggingface.co/ArtooDtoo/Orpheus_PTBR_FT_Unsloth_Chk-1800)**. Adapters and reports at the root; `graficos/` with curves and timing; `inferencias/` with evaluation audio.

## Checkpoints (LoRA adapters)

| Path | Description |
|---|---|
| `final_adapter/` | Final adapter (372 MB) — **use this for inference** |
| `checkpoint-3351/` | Adapter at step 3,351 + tokenizer + trainer state |

## Training

| Parameter | Value |
|---|---|
| Base model | canopylabs/3b-es_it-ft-research_release |
| Starting adapter | ArtooDtoo/Orpheus_PTBR_FT_Unsloth_Chk-1800 |
| Train / validation samples | 13,404 / 273 |
| Steps | 3,351 (1 epoch) |
| Training time | ~21.4 h (~23 s/step) |

Reports in `training_report.txt` and `training_stats.json`.

## Files

- `graficos/` — `loss_curve*.png`, `losses.csv`, `epoch_times.csv`, `step_times.csv`
- `inferencias/` — `artoodtoo_ft_e3_epoch1_p*.wav` (end of epoch 1), `artoodtoo_ft_e3_{custom3,random3,retry_clean,retry_clean2}_p*.wav` (evaluation in 4 configurations), and the prompts used (`*prompts*.txt`)

## Usage

Load the base model and apply the adapter with PEFT/Unsloth:

```python
from peft import PeftModel
model = PeftModel.from_pretrained(base_model, "OrpheusTTS/final_adapter")
```

## Citation

These adapters are LoRA fine-tunes of [canopylabs/3b-es_it-ft-research_release](https://huggingface.co/canopylabs/3b-es_it-ft-research_release), continued from [ArtooDtoo/Orpheus_PTBR_FT_Unsloth_Chk-1800](https://huggingface.co/ArtooDtoo/Orpheus_PTBR_FT_Unsloth_Chk-1800). If you use them, please cite:

> DINIZ, Thomaz. **Incorporando regionalismos e sotaques em modelos de síntese de fala**. 2026. Dissertação (Mestrado em Ciência da Computação) — Universidade Federal de Campina Grande, Campina Grande, 2026.