Model Card for indri-0.1-350m-tts

Indri is a series of audio models that can do TTS, ASR, and audio continuation. This is the medium sized model (350M) in our series and supports TTS tasks in 2 languages:

1. English
2. Hindi

Model Details

Model Description

indri-0.1-350m-tts is a novel, ultra-small, and lightweight TTS model based on the transformer architecture. It models audio as tokens and can generate high-quality audio with consistent style cloning of the speaker.

Samples

Key features

1. Small, based on GPT-2 medium architecture. The methodology can be extended to any autoregressive transformer-based architecture.
2. Ultra-fast. Using our self hosted service option, on RTX6000Ada NVIDIA GPU the model can achieve speeds up to 300 toks/s (3s of audio generation per s) and under 20ms time to first token.
3. On RTX6000Ada, it can support a batch size of ~300 sequences with full context length of 1024 tokens
4. Supports voice cloning with small prompts (<5s).
5. Code mixing text input in 2 languages - English and Hindi.

Details

1. Model Type: GPT-2 based language model
2. Size: 350M parameters
3. Language Support: English, Hindi
4. License: This model is not for commercial usage. This is only a research showcase.

Technical details

Here's a brief of how the model works:

1. Converts input text into tokens
2. Runs autoregressive decoding on GPT-2 based transformer model and generates audio tokens
3. Decodes audio tokens (using Kyutai/mimi) to audio

Please read our blog here for more technical details on how it was built.

How to Get Started with the Model

🤗 pipelines

Use the code below to get started with the model. Pipelines are the best way to get started with the model.

import torch
import torchaudio
from transformers import pipeline

model_id = '11mlabs/indri-0.1-350m-tts'
task = 'indri-tts'

pipe = pipeline(
    task,
    model=model_id,
    device=torch.device('cuda:0'), # Update this based on your hardware,
    trust_remote_code=True
)

output = pipe(['Hi, my name is Indri and I like to talk.'], speaker = '[spkr_63]')

torchaudio.save('output.wav', output[0]['audio'][0], sample_rate=24000)

Available speakers

Self hosted service

git clone https://github.com/cmeraki/indri.git
cd indri
pip install -r requirements.txt

# Install ffmpeg (for Mac/Windows, refer here: https://www.ffmpeg.org/download.html)
sudo apt update -y
sudo apt upgrade -y
sudo apt install ffmpeg -y

python -m inference --model_path 11mlabs/indri-0.1-350m-tts --device cuda:0 --port 8000

Citation

If you use this model in your research, please cite:

@misc{indri-multimodal-alm,
  author       = {11mlabs},
  title        = {Indri: Multimodal audio language model},
  year         = {2024},
  publisher    = {GitHub},
  journal      = {GitHub Repository},
  howpublished = {\url{https://github.com/cmeraki/indri}},
  email        = {compute@merakilabs.com}
}

BibTex

1. nanoGPT
2. Kyutai/mimi

@techreport{kyutai2024moshi,
      title={Moshi: a speech-text foundation model for real-time dialogue},
      author={Alexandre D\'efossez and Laurent Mazar\'e and Manu Orsini and
      Am\'elie Royer and Patrick P\'erez and Herv\'e J\'egou and Edouard Grave and Neil Zeghidour},
      year={2024},
      eprint={2410.00037},
      archivePrefix={arXiv},
      primaryClass={eess.AS},
      url={https://arxiv.org/abs/2410.00037},
}

3. Whisper

@misc{radford2022whisper,
  doi = {10.48550/ARXIV.2212.04356},
  url = {https://arxiv.org/abs/2212.04356},
  author = {Radford, Alec and Kim, Jong Wook and Xu, Tao and Brockman, Greg and McLeavey, Christine and Sutskever, Ilya},
  title = {Robust Speech Recognition via Large-Scale Weak Supervision},
  publisher = {arXiv},
  year = {2022},
  copyright = {arXiv.org perpetual, non-exclusive license}
}

4. silero-vad

@misc{Silero VAD,
  author = {Silero Team},
  title = {Silero VAD: pre-trained enterprise-grade Voice Activity Detector (VAD), Number Detector and Language Classifier},
  year = {2024},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/snakers4/silero-vad}},
  commit = {insert_some_commit_here},
  email = {hello@silero.ai}
}