---
license: other
license_name: commercial-license-agreement
license_link: LICENSE
language:
- 'no'
- nb
- nn
base_model:
- ResembleAI/chatterbox
pipeline_tag: text-to-speech
---
# Norwegian Chatterbox TTS Model Card

## Model Overview
**Name:** Norwegian Chatterbox TTS (finetuned)  
**Architecture:** Based on the Chatterbox text-to-speech architecture, adapted and finetuned for Norwegian language support.  
**Framework:** 🤗 Transformers & 🦾 TorchAudio  
**License:** Dual license (Free for personal and educational use)

This model generates high-quality, natural-sounding Norwegian speech from input text. 
The model is a fine-tuned version of ResembleAI/chatterbox. It’s ideal for voice assistants, audiobooks, notifications, and accessibility applications requireing Norwegian language support.

---

## Intended Use
- **Primary:** Text-to-speech synthesis for Norwegian (Bokmål / Nynorsk).
- - Emotional expressiveness
  - Norwegian dialects
- **Examples:**  
  - Virtual assistants and chatbots  
  - E‑learning platforms  
  - Audiobook narration  
  - In‑car infotainment systems  

## Training Data
- **Base Model:** Pretrained Chatterbox TTS, trained on a multi‑lingual corpus.  
- **Fine‑Tuning Data:**  
  - ~6000 hours of audio‑recordings and transcriptions, of varying quality, spanning many dialects in addition to Bokmål and Nynorsk.  
  
---
<table>
  <thead>
    <tr>
      <th colspan="2" style="text-align:center; padding:0.5em 0;">
        <h2>Samples / Eksempler</h2>
      </th>
    </tr>
    <tr>
      <th colspan="2" style="text-align:center; font-weight:lighting-color; padding:0.5em 0;">
        Tilgi dem ikke; de vet hva de gjør!<br>De puster på hatets og ondskapens glør!<br>De liker å drepe, de frydes ved jammer,<br>de ønsker å se vår verden i flammer!<br>De ønsker å drukne oss alle i blod!<br>Tror du det ikke? Du vet det jo!
      </th>
    </tr>
    <tr>
      <th>Settings / Innstillinger</th>
      <th>Generert lydklipp / Generated audio clip</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Male voice (English speaker) Ex: 0.5, CFG: 0.5, Temp: 0.5</td>
      <td><audio controls src="https://huggingface.co/akhbar/chatterbox-norwegian/resolve/main/Arnulf%20Overland%20-%2005_05_07%20-%20Male.wav">Your browser does not support audio.</audio></td>
    </tr>
    <tr>
      <td>Male voice (English speaker) Ex: 0.8, CFG: 0.5, Temp: 0.5</td>
      <td><audio controls src="https://huggingface.co/akhbar/chatterbox-norwegian/resolve/main/Arnulf%20Overland%20-%2008_05_07%20-%20Male.wav">Your browser does not support audio.</audio>
    </tr>
    <tr>
      <td>Male voice (English speaker) Ex: 1.2, CFG: 0.5, Temp: 0.7</td>
      <td><audio controls src="https://huggingface.co/akhbar/chatterbox-norwegian/resolve/main/Arnulf%20Overland%20-%2012_05_07%20-%20Male.wav">Your browser does not support audio.</audio></td>
    </tr>
    <tr>
      <td>Female voice (English speaker) Ex: 0.5, CFG: 0.5, Temp: 0.7</td>
      <td><audio controls src="https://huggingface.co/akhbar/chatterbox-norwegian/resolve/main/Arnulf%20Overland%20-%2005_05_07%20-%20Female.wav">Your browser does not support audio.</audio></td>
    </tr>
    <tr>
      <td>Female voice (English speaker) Ex: 0.5, CFG: 0.5, Temp: 0.4</td>
      <td><audio controls src="https://huggingface.co/akhbar/chatterbox-norwegian/resolve/main/Arnulf%20Overland%20-%2005_05_04%20-%20Female.wav">Your browser does not support audio.</audio></td>
    </tr>
    <tr>
      <td>Female voice (English speaker) Ex: 0.5, CFG: 0.5, Temp: 0.7</td>
      <td><audio controls src="https://huggingface.co/akhbar/chatterbox-norwegian/resolve/main/Arnulf%20Overland%20-%2013_05_04%20-%20Female.wav">Your browser does not support audio.</audio></td>
    </tr>
  </tbody>
</table>


## Known limitations
- The model does not handle longer text inputs
- The model only supports Norwegian

## Roadmap
- Make the model support longer text inputs


# Installation
```
pip install chatterbox-tts
```


# Usage
```python
from pathlib import Path

import torchaudio as ta
from chatterbox.tts import ChatterboxTTS
from huggingface_hub import hf_hub_download

REPO_ID = "akhbar/chatterbox-tts-norwegian"

for fpath in ["ve.safetensors", "t3_cfg.safetensors", "s3gen.safetensors", "tokenizer.json", "conds.pt"]:
    local_path = hf_hub_download(repo_id=REPO_ID, filename=fpath)

model = ChatterboxTTS.from_local(Path(local_path).parent, device="cuda")

text = (
    "Det beste er godt nok, bare man kan få det."
    "Dette ordtaket understreker at selv om man søker det beste, så kan det være vanskelig å oppnå, og at det man får kan være godt nok."
)
wav = model.generate(text, exaggeration=1.0, cfg_weight=0.5, temperature=0.4)
ta.save("test-1.wav", wav, model.sr)

# If you want to synthesize with a different voice, specify the audio prompt
AUDIO_PROMPT_PATH = "<voice_to_clone.wav>"
wav = model.generate(text, audio_prompt_path=AUDIO_PROMPT_PATH)
ta.save("ordtak.wav", wav, model.sr)
```
See `example_tts.py` for more examples.

# Acknowledgements
- [ResembleAI](https://huggingface.co/ResembleAI/chatterbox)


## License

This project is offered under a **dual‑license** model:

1. **Non‑Commercial Personal & Educational Use**  
   - License: **NonCommercial‑Personal‑Educational 1.0.0**  
   - Applies to: Individuals and educational institutions only  
   - Permissions:  
     - Run and modify the model **for your own private or classroom use**  
   - Restrictions:  
     - **No redistribution** of the model or derivatives  
     - **No commercial use** (including internal business use or paid services)  
   - See [`LICENSE.txt`](LICENSE.txt) for full terms.

2. **Commercial Use**  
   - A separate, paid commercial license is required for any use of the model (or derivatives) in products, services, internal business processes, or any scenario involving monetary compensation or business advantage.  
   - To license this model for commercial purposes, please contact the author.


## Citation
```bibtex
@misc{akhbar2025norwegianchatterbox,
  title={Chatterbox TTS Norwegian},
  author={Alexander Vaagan},
  year={2025},
  howpublished={\url{https://huggingface.co/akhbar/norwegian-chatterbox-tts}}
}