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--- |
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dataset_info: |
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- config_name: Assamese |
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- config_name: Bengali |
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- config_name: Bodo |
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- config_name: Dogri |
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- config_name: Gujarati |
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- config_name: Hindi |
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- config_name: Kannada |
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path: Sindhi/test-* |
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path: Urdu/train-* |
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path: Urdu/test-* |
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license: cc-by-4.0 |
|
task_categories: |
|
- text-to-speech |
|
language: |
|
- as |
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- gu |
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- hi |
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- kn |
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- ks |
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- ml |
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- mr |
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- ne |
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- or |
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- pa |
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- sa |
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- ta |
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- ur |
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pretty_name: indicvoices-r |
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--- |
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# IndicVoices-R: Multilingual, Multi-Speaker Speech Corpus for Indian TTS |
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[](https://proceedings.neurips.cc/paper_files/paper/2024/file/7dfcaf4512bbf2a807a783b90afb6c09-Paper-Datasets_and_Benchmarks_Track.pdf) |
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## Dataset Summary |
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**IndicVoices-R (IV-R)** is the largest multilingual Indian text-to-speech (TTS) dataset derived from an automatic speech recognition (ASR) dataset. It contains **1,704 hours** of high-quality speech from **10,496 speakers** across **22 Indian languages**. This dataset is designed to enhance the development of robust Indian TTS models by providing diverse speaker demographics, natural conversational speech, and high-quality audio samples. |
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## Key Features |
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- **Comprehensive Coverage**: Includes **all 22 scheduled Indian languages**, ranging from **9 to 175 hours per language**. |
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- **Speaker Diversity**: **10,496 speakers**, ensuring rich demographic and linguistic variation. |
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- **High-Quality Samples**: Speech quality comparable to **gold-standard TTS datasets** (LJSpeech, LibriTTS, IndicTTS). |
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- **Natural Speech Recordings**: **93.25% extempore speech**, leading to more expressive and natural-sounding synthesis. |
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- **Zero-shot, Few-shot, and Many-shot Benchmarking**: Includes a **benchmark dataset** for evaluating speaker generalization capabilities of TTS models. |
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## Data Processing Pipeline |
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The dataset was created by restoring and enhancing ASR-quality speech using: |
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1. **Demixing**: HTDemucs model to separate speech from background noise. |
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2. **Dereverberation**: VoiceFixer to reduce reverb and enhance speech clarity. |
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3. **Speech Enhancement**: DeepFilterNet3 to remove remaining artifacts. |
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4. **Filtering**: Samples filtered based on **speech clarity, SNR, pitch variation, and speaking rate**. |
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5. **Normalization**: Volume adjusted using PyDub for consistency. |
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## Dataset Format |
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Each entry in the dataset includes: |
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- **Audio file**: `.wav` format, 48 kHz sampling rate. |
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- **Text transcript**: Available in both verbatim and normalized formats. |
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- **Metadata JSON**: Includes speaker ID, gender, age group, duration, and language. |
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## Benchmarks & Evaluation |
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IndicVoices-R includes a **benchmark suite** to evaluate **zero-shot, few-shot, and many-shot** TTS model performance across different demographics and speech styles. |
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### Key Evaluation Metrics: |
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- **NORESQA-MOS**: Measures naturalness of synthesized speech. |
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- **SNR & C50**: Assess speech clarity and reverberation levels. |
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- **Speaker Similarity (S-SIM)**: Evaluates zero-shot speaker generalization. |
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## Usage & Applications |
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IndicVoices-R can be used for: |
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- **Training multilingual TTS models** with high speaker diversity. |
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- **Improving zero-shot speaker generalization** for Indian languages. |
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- **Building expressive and natural-sounding synthetic voices**. |
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- **Evaluating TTS performance** with a standardized benchmark. |
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## License |
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CC-BY-4.0 |
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## Acknowledgements |
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This project was supported by Digital India Bhashini, the Ministry of Electronics and Information Technology (Government of India), |
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EkStep Foundation, and Nilekani Philanthropies. Special thanks to CDAC Pune for access to the PARAM-Siddhi supercomputer, |
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enabling our speech enhancement pipeline and model training. We also appreciate the unwavering support from the AI4Bharat team. |
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## Citation |
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If you use IndicVoices-R, please cite the following paper: |
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``` |
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@inproceedings{ai4bharat2024indicvoices_r, |
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author = {Ashwin Sankar and |
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Srija Anand and |
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Praveen Srinivasa Varadhan and |
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Sherry Thomas and |
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Mehak Singal and |
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Shridhar Kumar and |
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Deovrat Mehendale and |
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Aditi Krishana and |
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Giri Raju and |
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Mitesh M. Khapra}, |
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editor = {Amir Globersons and |
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Lester Mackey and |
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Danielle Belgrave and |
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Angela Fan and |
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Ulrich Paquet and |
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Jakub M. Tomczak and |
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Cheng Zhang}, |
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title = {IndicVoices-R: Unlocking a Massive Multilingual Multi-speaker Speech |
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Corpus for Scaling Indian {TTS}}, |
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booktitle = {Advances in Neural Information Processing Systems 38: Annual Conference |
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on Neural Information Processing Systems 2024, NeurIPS 2024, Vancouver, |
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BC, Canada, December 10 - 15, 2024}, |
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year = {2024}, |
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url = {http://papers.nips.cc/paper\_files/paper/2024/hash/7dfcaf4512bbf2a807a783b90afb6c09-Abstract-Datasets\_and\_Benchmarks\_Track.html}, |
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} |
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``` |