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Bark voice cloning

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This code works on python 3.10, i have not tested it on other versions. Some older versions will have issues.

Voice cloning with bark in high quality?

It's possible now.

examples_biden_example.mov

How do I clone a voice?

For developers:

For everyone:

Voices cloned aren't very convincing, why are other people's cloned voices better than mine?

Make sure these things are NOT in your voice input: (in no particular order)

  • Noise (You can use a noise remover before)
  • Music (There are also music remover tools) (Unless you want music in the background)
  • A cut-off at the end (This will cause it to try and continue on the generation)
  • Under 1 second of training data (i personally suggest around 10 seconds for good potential, but i've had great results with 5 seconds as well.)

What makes for good prompt audio? (in no particular order)

  • Clearly spoken
  • No weird background noises
  • Only one speaker
  • Audio which ends after a sentence ends
  • Regular/common voice (They usually have more success, it's still capable of cloning complex voices, but not as good at it)
  • Around 10 seconds of data

Pretrained models

Official

Name HuBERT Model Quantizer Version Epoch Language Dataset
quantifier_hubert_base_ls960.pth HuBERT Base 0 3 ENG GitMylo/bark-semantic-training
quantifier_hubert_base_ls960_14.pth HuBERT Base 0 14 ENG GitMylo/bark-semantic-training
quantifier_V1_hubert_base_ls960_23.pth HuBERT Base 1 23 ENG GitMylo/bark-semantic-training

Community

Author Name HuBERT Model Quantizer Version Epoch Language Dataset
HobisPL polish-HuBERT-quantizer_8_epoch.pth HuBERT Base 1 8 POL Hobis/bark-polish-semantic-wav-training
C0untFloyd german-HuBERT-quantizer_14_epoch.pth HuBERT Base 1 14 GER CountFloyd/bark-german-semantic-wav-training

For developers: Implementing voice cloning in your bark projects

  • Simply copy the files from this directory into your project.
  • The hubert manager contains methods to download HuBERT and the custom Quantizer model.
  • Loading the CustomHuBERT should be pretty straightforward
  • The notebook contains code to use on cuda or cpu. Instead of just cpu.
from hubert.pre_kmeans_hubert import CustomHubert
import torchaudio

# Load the HuBERT model,
# checkpoint_path should work fine with data/models/hubert/hubert.pt for the default config
hubert_model = CustomHubert(checkpoint_path='path/to/checkpoint')

# Run the model to extract semantic features from an audio file, where wav is your audio file
wav, sr = torchaudio.load('path/to/wav') # This is where you load your wav, with soundfile or torchaudio for example

if wav.shape[0] == 2:  # Stereo to mono if needed
    wav = wav.mean(0, keepdim=True)

semantic_vectors = hubert_model.forward(wav, input_sample_hz=sr)
import torch
from hubert.customtokenizer import CustomTokenizer

# Load the CustomTokenizer model from a checkpoint
# With default config, you can use the pretrained model from huggingface
# With the default setup from HuBERTManager, this will be in data/models/hubert/tokenizer.pth
tokenizer = CustomTokenizer.load_from_checkpoint('data/models/hubert/tokenizer.pth')  # Automatically uses the right layers

# Process the semantic vectors from the previous HuBERT run (This works in batches, so you can send the entire HuBERT output)
semantic_tokens = tokenizer.get_token(semantic_vectors)

# Congratulations! You now have semantic tokens which can be used inside of a speaker prompt file.

How do I train it myself?

Simply run the training commands.

A simple way to create semantic data and wavs for training, is with my script: bark-data-gen. But remember that the creation of the wavs will take around the same time if not longer than the creation of the semantics. This can take a while to generate because of that.

For example, if you have a dataset with zips containing audio files, one zip for semantics, and one for the wav files. Inside of a folder called "Literature"

You should run process.py --path Literature --mode prepare for extracting all the data to one directory

You should run process.py --path Literature --mode prepare2 for creating HuBERT semantic vectors, ready for training

You should run process.py --path Literature --mode train for training

And when your model has trained enough, you can run process.py --path Literature --mode test to test the latest model.

Disclaimer

I am not responsible for audio generated using semantics created by this model. Just don't use it for illegal purposes.

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The code for the bark-voicecloning model. Training and inference.

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