README.md

metadata

title: MahaTTSv2
emoji: ⚡
colorFrom: red
colorTo: indigo
sdk: gradio
sdk_version: 5.39.0
app_file: app.py
pinned: false
license: apache-2.0

MahaTTS v2: An Open-Source Large Speech Generation Model

a Dubverse Black initiative

---

Description

We introduce MahaTTS v2, a multi-speaker text-to-speech (TTS) system that has been trained on 50k hours of Indic and global languages. We have followed a text-to-semantic-to-acoustic approach, leveraging wav2vec2 tokens, this gives out-the-box generalization to unseen low-resourced languages. We have open sourced the first version (MahaTTS), which was trained on English and Indic languages as two separate models on 9k and 400 hours of open source datasets. In MahaTTS v2, we have collected over 20k+ hours of training data into a single multilingual cross-lingual model. We have used gemma as the backbone for text-to-semantic modeling and a conditional flow model for semantics to mel spectogram generation, using a BigVGAN vocoder to generate the final audio waveform. The model has shown great robustness and quality results compared to the previous version. We are also open sourcing the ability to finetune on your own voice.

With this release:

• generate voices in multiple seen and unseen speaker identities (voice cloning)
• generate voices in multiple langauges (multilingual and cross-lingual voice cloning)
• copy the style of speech from one speaker to another (cross-lingual voice cloning with prosody and intonation transfer)
• Train your own large scale pretraining or finetuning Models.

MahaTTS Architecture

Model Params

Model	Parameters	Model Type	Output
Text to Semantic (M1)	510 M	Causal LM	10,001 Tokens
Semantic to MelSpec(M2)	71 M	FLOW	100x Melspec
BigVGAN Vocoder	112 M	GAN	Audio Waveform

🌐 Supported Languages

The following languages are currently supported:

Language	Status
Assamese (in)	✅
Bengali (in)	✅
Bhojpuri (in)	✅
Bodo (in)	✅
Dogri (in)	✅
Odia (in)	✅
English (en)	✅
French (fr)	✅
Gujarati (in)	✅
German (de)	✅
Hindi (in)	✅
Italian (it)	✅
Kannada (in)	✅
Malayalam (in)	✅
Marathi (in)	✅
Telugu (in)	✅
Punjabi (in)	✅
Rajasthani (in)	✅
Sanskrit (in)	✅
Spanish (es)	✅
Tamil (in)	✅
Telugu (in)	✅

TODO:

1. Addind Training Instructions.
2. Add a colab for the same.

License

MahaTTS is licensed under the Apache 2.0 License.

🙏 Appreciation

• Tortoise-tts for inspiring the architecture
• M4t Seamless AudioLM and many other ground-breaking papers that enabled the development of MahaTTS
• BIGVGAN out of the box vocoder
• Flow training for training Flow model
• Huggingface for related training and inference code