--- dataset_info: - config_name: Assamese features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 122851289416.98 num_examples: 71710 - name: test num_bytes: 526265972.05531913 num_examples: 366 download_size: 108723673759 dataset_size: 123377555389.03531 - config_name: Bengali features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 77016497625.104 num_examples: 39904 - name: test num_bytes: 522451001.2429907 num_examples: 288 download_size: 72237562604 dataset_size: 77538948626.347 - config_name: Bodo features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 127649597635.045 num_examples: 81887 - name: test num_bytes: 461090189.29545456 num_examples: 387 download_size: 105061483331 dataset_size: 128110687824.34045 - config_name: Dogri features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 48153401784.12501 num_examples: 26635 - name: test num_bytes: 657737960.9497126 num_examples: 425 download_size: 44179370019 dataset_size: 48811139745.07472 - config_name: Gujarati features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 2212555405.137 num_examples: 1129 - name: test num_bytes: 922872065.9261214 num_examples: 662 download_size: 2889359875 dataset_size: 3135427471.0631213 - config_name: Hindi features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 49253683927.42801 num_examples: 26318 - name: test num_bytes: 634066169.5672913 num_examples: 376 download_size: 47225888374 dataset_size: 49887750096.9953 - config_name: Kannada features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 30237369216.256 num_examples: 16986 - name: test num_bytes: 620186097.3343196 num_examples: 342 download_size: 27604791540 dataset_size: 30857555313.59032 - config_name: Kashmiri features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 42089394844.468 num_examples: 24692 - name: test num_bytes: 625351041.1055557 num_examples: 403 download_size: 39538620554 dataset_size: 42714745885.573555 - config_name: Konkani features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 30645313881.567 num_examples: 19701 - name: test num_bytes: 775586053.842654 num_examples: 739 download_size: 31315001834 dataset_size: 31420899935.409657 - config_name: Maithili features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 53938248942.716 num_examples: 31359 - name: test num_bytes: 441483304.53589314 num_examples: 260 download_size: 52296893761 dataset_size: 54379732247.2519 - config_name: Malayalam features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 57312827276.29399 num_examples: 31106 - name: test num_bytes: 621717372.9800854 num_examples: 397 download_size: 52034095360 dataset_size: 57934544649.27408 - config_name: Manipuri features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 14328219517.876 num_examples: 7532 - name: test num_bytes: 674561618.2266463 num_examples: 410 download_size: 13183954772 dataset_size: 15002781136.102646 - config_name: Marathi features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 31333901677.368004 num_examples: 18776 - name: test num_bytes: 567714501.2734761 num_examples: 365 download_size: 31434459154 dataset_size: 31901616178.64148 - config_name: Nepali features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 69214282970.652 num_examples: 42276 - name: test num_bytes: 510999634.7777778 num_examples: 300 download_size: 65816076799 dataset_size: 69725282605.42976 - config_name: Odia features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 47662281716.28999 num_examples: 25202 - name: test num_bytes: 572683111.8775511 num_examples: 363 download_size: 44466622775 dataset_size: 48234964828.16754 - config_name: Punjabi features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 48801794459.4 num_examples: 25768 - name: test num_bytes: 833390891.9508197 num_examples: 588 download_size: 46005835537 dataset_size: 49635185351.35082 - config_name: Sanskrit features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 21231433614.775 num_examples: 12705 - name: test num_bytes: 840746742.9921613 num_examples: 609 download_size: 20843659645 dataset_size: 22072180357.767162 - config_name: Santali features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 53565013650.008 num_examples: 32613 - name: test num_bytes: 725466848.886076 num_examples: 660 download_size: 38807095863 dataset_size: 54290480498.89408 - config_name: Sindhi features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 5489168821.177 num_examples: 3127 - name: test num_bytes: 688693272.9590443 num_examples: 407 download_size: 5871146490 dataset_size: 6177862094.1360445 - config_name: Tamil features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 68139171799.312 num_examples: 39292 - name: test num_bytes: 499088144.2347561 num_examples: 293 download_size: 63139582505 dataset_size: 68638259943.54675 - config_name: Telugu features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 92460055349.504 num_examples: 47208 - name: test num_bytes: 616485791.6785226 num_examples: 339 download_size: 86122150914 dataset_size: 93076541141.18253 - config_name: Urdu features: - name: text dtype: string - name: lang dtype: string - name: samples dtype: int64 - name: verbatim dtype: string - name: normalized dtype: string - name: speaker_id dtype: string - name: scenario dtype: string - name: task_name dtype: string - name: gender dtype: string - name: age_group dtype: string - name: job_type dtype: string - name: qualification dtype: string - name: area dtype: string - name: district dtype: string - name: state dtype: string - name: occupation dtype: string - name: audio dtype: audio: sampling_rate: 48000 - name: utterance_pitch_mean dtype: float64 - name: utterance_pitch_std dtype: float64 - name: snr dtype: float64 - name: c50 dtype: float64 - name: speaking_rate dtype: float64 - name: cer dtype: string - name: duration dtype: float64 splits: - name: train num_bytes: 51632879167.13201 num_examples: 29324 - name: test num_bytes: 681062699.7224288 num_examples: 470 download_size: 48988047549 dataset_size: 52313941866.85444 configs: - config_name: Assamese data_files: - split: train path: Assamese/train-* - split: test path: Assamese/test-* - config_name: Bengali data_files: - split: train path: Bengali/train-* - split: test path: Bengali/test-* - config_name: Bodo data_files: - split: train path: Bodo/train-* - split: test path: Bodo/test-* - config_name: Dogri data_files: - split: train path: Dogri/train-* - split: test path: Dogri/test-* - config_name: Gujarati data_files: - split: train path: Gujarati/train-* - split: test path: Gujarati/test-* - config_name: Hindi data_files: - split: train path: Hindi/train-* - split: test path: Hindi/test-* - config_name: Kannada data_files: - split: train path: Kannada/train-* - split: test path: Kannada/test-* - config_name: Kashmiri data_files: - split: train path: Kashmiri/train-* - split: test path: Kashmiri/test-* - config_name: Konkani data_files: - split: train path: Konkani/train-* - split: test path: Konkani/test-* - config_name: Maithili data_files: - split: train path: Maithili/train-* - split: test path: Maithili/test-* - config_name: Malayalam data_files: - split: train path: Malayalam/train-* - split: test path: Malayalam/test-* - config_name: Manipuri data_files: - split: train path: Manipuri/train-* - split: test path: Manipuri/test-* - config_name: Marathi data_files: - split: train path: Marathi/train-* - split: test path: Marathi/test-* - config_name: Nepali data_files: - split: train path: Nepali/train-* - split: test path: Nepali/test-* - config_name: Odia data_files: - split: train path: Odia/train-* - split: test path: Odia/test-* - config_name: Punjabi data_files: - split: train path: Punjabi/train-* - split: test path: Punjabi/test-* - config_name: Sanskrit data_files: - split: train path: Sanskrit/train-* - split: test path: Sanskrit/test-* - config_name: Santali data_files: - split: train path: Santali/train-* - split: test path: Santali/test-* - config_name: Sindhi data_files: - split: train path: Sindhi/train-* - split: test path: Sindhi/test-* - config_name: Tamil data_files: - split: train path: Tamil/train-* - split: test path: Tamil/test-* - config_name: Telugu data_files: - split: train path: Telugu/train-* - split: test path: Telugu/test-* - config_name: Urdu data_files: - split: train path: Urdu/train-* - split: test path: Urdu/test-* license: cc-by-4.0 task_categories: - text-to-speech language: - as - bn - gu - hi - kn - ks - ml - mr - ne - or - pa - sa - ta - te - ur pretty_name: indicvoices-r --- # IndicVoices-R: Multilingual, Multi-Speaker Speech Corpus for Indian TTS [![NeurIPS 2024 Datasets & Benchmark Tracks](https://img.shields.io/badge/NeurIPS-2024-blue)](https://proceedings.neurips.cc/paper_files/paper/2024/file/7dfcaf4512bbf2a807a783b90afb6c09-Paper-Datasets_and_Benchmarks_Track.pdf) ## Dataset Summary **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. ## Key Features - **Comprehensive Coverage**: Includes **all 22 scheduled Indian languages**, ranging from **9 to 175 hours per language**. - **Speaker Diversity**: **10,496 speakers**, ensuring rich demographic and linguistic variation. - **High-Quality Samples**: Speech quality comparable to **gold-standard TTS datasets** (LJSpeech, LibriTTS, IndicTTS). - **Natural Speech Recordings**: **93.25% extempore speech**, leading to more expressive and natural-sounding synthesis. - **Zero-shot, Few-shot, and Many-shot Benchmarking**: Includes a **benchmark dataset** for evaluating speaker generalization capabilities of TTS models. ## Data Processing Pipeline The dataset was created by restoring and enhancing ASR-quality speech using: 1. **Demixing**: HTDemucs model to separate speech from background noise. 2. **Dereverberation**: VoiceFixer to reduce reverb and enhance speech clarity. 3. **Speech Enhancement**: DeepFilterNet3 to remove remaining artifacts. 4. **Filtering**: Samples filtered based on **speech clarity, SNR, pitch variation, and speaking rate**. 5. **Normalization**: Volume adjusted using PyDub for consistency. ## Dataset Format Each entry in the dataset includes: - **Audio file**: `.wav` format, 48 kHz sampling rate. - **Text transcript**: Available in both verbatim and normalized formats. - **Metadata JSON**: Includes speaker ID, gender, age group, duration, and language. ## Benchmarks & Evaluation IndicVoices-R includes a **benchmark suite** to evaluate **zero-shot, few-shot, and many-shot** TTS model performance across different demographics and speech styles. ### Key Evaluation Metrics: - **NORESQA-MOS**: Measures naturalness of synthesized speech. - **SNR & C50**: Assess speech clarity and reverberation levels. - **Speaker Similarity (S-SIM)**: Evaluates zero-shot speaker generalization. ## Usage & Applications IndicVoices-R can be used for: - **Training multilingual TTS models** with high speaker diversity. - **Improving zero-shot speaker generalization** for Indian languages. - **Building expressive and natural-sounding synthetic voices**. - **Evaluating TTS performance** with a standardized benchmark. ## License CC-BY-4.0 ## Acknowledgements This project was supported by Digital India Bhashini, the Ministry of Electronics and Information Technology (Government of India), EkStep Foundation, and Nilekani Philanthropies. Special thanks to CDAC Pune for access to the PARAM-Siddhi supercomputer, enabling our speech enhancement pipeline and model training. We also appreciate the unwavering support from the AI4Bharat team. ## Citation If you use IndicVoices-R, please cite the following paper: ``` @inproceedings{ai4bharat2024indicvoices_r, author = {Ashwin Sankar and Srija Anand and Praveen Srinivasa Varadhan and Sherry Thomas and Mehak Singal and Shridhar Kumar and Deovrat Mehendale and Aditi Krishana and Giri Raju and Mitesh M. Khapra}, editor = {Amir Globersons and Lester Mackey and Danielle Belgrave and Angela Fan and Ulrich Paquet and Jakub M. Tomczak and Cheng Zhang}, title = {IndicVoices-R: Unlocking a Massive Multilingual Multi-speaker Speech Corpus for Scaling Indian {TTS}}, booktitle = {Advances in Neural Information Processing Systems 38: Annual Conference on Neural Information Processing Systems 2024, NeurIPS 2024, Vancouver, BC, Canada, December 10 - 15, 2024}, year = {2024}, url = {http://papers.nips.cc/paper\_files/paper/2024/hash/7dfcaf4512bbf2a807a783b90afb6c09-Abstract-Datasets\_and\_Benchmarks\_Track.html}, } ```