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README.md
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---
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language:
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- en
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- de
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- es
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- fr
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- hi
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- it
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- ja
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- ko
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- pl
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- pt
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- ru
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- tr
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- zh
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thumbnail: https://user-images.githubusercontent.com/5068315/230698495-cbb1ced9-c911-4c9a-941d-a1a4a1286ac6.png
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library: "bark"
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license: "cc-by-nc-4.0"
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tags:
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- bark
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- audio
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- text-to-speech
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---
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# Bark
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Bark is a transformer-based text-to-audio model created by [Suno](https://www.suno.ai).
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Bark can generate highly realistic, multilingual speech as well as other audio - including music,
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background noise and simple sound effects. The model can also produce nonverbal
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communications like laughing, sighing and crying. To support the research community,
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we are providing access to pretrained model checkpoints ready for inference.
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The original github repo and model card can be found [here](https://github.com/suno-ai/bark).
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This model is meant for research purposes only.
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The model output is not censored and the authors do not endorse the opinions in the generated content.
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Use at your own risk.
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Two checkpoints are released:
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- [**small** (this checkpoint)](https://huggingface.co/suno/bark-small)
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- [large](https://huggingface.co/suno/bark)
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## Example
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Try out Bark yourself!
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* Bark Colab:
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<a target="_blank" href="https://colab.research.google.com/drive/1eJfA2XUa-mXwdMy7DoYKVYHI1iTd9Vkt?usp=sharing">
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<img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>
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</a>
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* Hugging Face Colab:
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<a target="_blank" href="https://colab.research.google.com/drive/1dWWkZzvu7L9Bunq9zvD-W02RFUXoW-Pd?usp=sharing">
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<img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>
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</a>
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* Hugging Face Demo:
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<a target="_blank" href="https://huggingface.co/spaces/suno/bark">
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<img src="https://huggingface.co/datasets/huggingface/badges/raw/main/open-in-hf-spaces-sm.svg" alt="Open in HuggingFace"/>
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</a>
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## π€ Transformers Usage
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You can run Bark locally with the π€ Transformers library from version 4.31.0 onwards.
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1. First install the π€ [Transformers library](https://github.com/huggingface/transformers) from main:
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```
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pip install git+https://github.com/huggingface/transformers.git
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```
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2. Run the following Python code to generate speech samples:
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```python
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from transformers import AutoProcessor, AutoModel
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processor = AutoProcessor.from_pretrained("suno/bark-small")
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model = AutoModel.from_pretrained("suno/bark-small")
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inputs = processor(
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text=["Hello, my name is Suno. And, uh β and I like pizza. [laughs] But I also have other interests such as playing tic tac toe."],
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return_tensors="pt",
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)
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speech_values = model.generate_speech(**inputs, do_sample=True)
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```
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3. Listen to the speech samples either in an ipynb notebook:
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```python
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from IPython.display import Audio
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sampling_rate = model.generation_config.sample_rate
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Audio(speech_values.cpu().numpy().squeeze(), rate=sampling_rate)
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```
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Or save them as a `.wav` file using a third-party library, e.g. `scipy`:
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```python
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import scipy
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sampling_rate = model.config.sample_rate
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scipy.io.wavfile.write("bark_out.wav", rate=sampling_rate, data=speech_values.cpu().numpy().squeeze())
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```
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For more details on using the Bark model for inference using the π€ Transformers library, refer to the [Bark docs](https://huggingface.co/docs/transformers/model_doc/bark).
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## Suno Usage
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You can also run Bark locally through the original [Bark library]((https://github.com/suno-ai/bark):
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1. First install the [`bark` library](https://github.com/suno-ai/bark)
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3. Run the following Python code:
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```python
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from bark import SAMPLE_RATE, generate_audio, preload_models
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from IPython.display import Audio
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# download and load all models
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preload_models()
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# generate audio from text
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text_prompt = """
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Hello, my name is Suno. And, uh β and I like pizza. [laughs]
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But I also have other interests such as playing tic tac toe.
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"""
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speech_array = generate_audio(text_prompt)
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# play text in notebook
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Audio(speech_array, rate=SAMPLE_RATE)
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```
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[pizza.webm](https://user-images.githubusercontent.com/5068315/230490503-417e688d-5115-4eee-9550-b46a2b465ee3.webm)
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To save `audio_array` as a WAV file:
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```python
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from scipy.io.wavfile import write as write_wav
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write_wav("/path/to/audio.wav", SAMPLE_RATE, audio_array)
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```
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## Model Details
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The following is additional information about the models released here.
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Bark is a series of three transformer models that turn text into audio.
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### Text to semantic tokens
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- Input: text, tokenized with [BERT tokenizer from Hugging Face](https://huggingface.co/docs/transformers/model_doc/bert#transformers.BertTokenizer)
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- Output: semantic tokens that encode the audio to be generated
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### Semantic to coarse tokens
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- Input: semantic tokens
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- Output: tokens from the first two codebooks of the [EnCodec Codec](https://github.com/facebookresearch/encodec) from facebook
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### Coarse to fine tokens
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- Input: the first two codebooks from EnCodec
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- Output: 8 codebooks from EnCodec
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### Architecture
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| Model | Parameters | Attention | Output Vocab size |
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|:-------------------------:|:----------:|------------|:-----------------:|
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| Text to semantic tokens | 80/300 M | Causal | 10,000 |
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| Semantic to coarse tokens | 80/300 M | Causal | 2x 1,024 |
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| Coarse to fine tokens | 80/300 M | Non-causal | 6x 1,024 |
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### Release date
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April 2023
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## Broader Implications
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We anticipate that this model's text to audio capabilities can be used to improve accessbility tools in a variety of languages.
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While we hope that this release will enable users to express their creativity and build applications that are a force
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for good, we acknowledge that any text to audio model has the potential for dual use. While it is not straightforward
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to voice clone known people with Bark, it can still be used for nefarious purposes. To further reduce the chances of unintended use of Bark,
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we also release a simple classifier to detect Bark-generated audio with high accuracy (see notebooks section of the main repository).
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