# cy_GB-bu_tts - Welsh TTS Model

This is a Welsh (Cymraeg) text-to-speech model trained using Piper.

## Model Details

- **Language:** Welsh (cy)
- **Sample Rate:** 22,050 Hz
- **Quality:** Medium
- **Framework:** Piper/VITS
- **Model Type:** Single-speaker TTS
- **Training Dataset:** [techiaith/bu-tts-cy-en](https://huggingface.co/datasets/techiaith/bu-tts-cy-en)

## Usage

### With Piper

Install [Piper](https://github.com/rhasspy/piper) and use the model:

```bash
# Download the model files
wget https://huggingface.co/techiaith/cy_GB-bu_tts/resolve/main/cy_GB-bu_tts.onnx
wget https://huggingface.co/techiaith/cy_GB-bu_tts/resolve/main/cy_GB-bu_tts.onnx.json

# Generate speech
echo "Helo, sut ydych chi heddiw?" | piper --model cy_GB-bu_tts.onnx --output_file output.wav
```

### Sample Sentences

Try these example sentences in Welsh:

- "Bore da, sut ydych chi?"
- "Diolch yn fawr am eich help."
- "Mae'r tywydd yn hyfryd heddiw."
- "Rwy'n dysgu siarad Cymraeg."

## Training Information

- **Base Model:** Fine-tuned from existing Piper checkpoint
- **Training Configuration:**
  - Batch size: 32
  - Validation split: 10%
  - Max epochs: 200
  - Precision: FP16 (mixed precision)
  - Checkpoint frequency: Every 5 epochs
  - Gradient clipping: 1.0
  - Warmup epochs: 5

## License

MIT License - See the training repository for details.

## Citation

If you use this model, please cite:

```bibtex
@misc{cy_GB-bu_tts,
  title={Welsh Text-to-Speech Model},
  author={Uned Technolegau Iaith, Prifysgol Bangor},
  year={2024},
  publisher={HuggingFace},
  howpublished={\url{https://huggingface.co/techiaith/cy_GB-bu_tts}}
}
```

## Acknowledgments

- Built using [Piper](https://github.com/rhasspy/piper) by Rhasspy
- Training data from the techiaith project