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Open Datasets
Common Voice — Audio corpus for speech recognition
Audio

Common Voice — Audio corpus for speech recognition

Common Voice is a community audio corpus, comprising thousands of voice recordings with their text transcripts. The dataset is mainly used for training and evaluating automatic speech recognition (ASR) systems.

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Size

Several thousand MP3 audio files accompanied by metadata CSV files, multilingual

Licence

CC0: Public Domain

Description

The dataset Common Voice contains thousands of MP3 audio files accompanied by transcripts validated by several listeners. It is divided into training, development, and test sets, with detailed metadata about the age, gender, focus, and quality of each recording.

What is this dataset for?

  • Train robust ASR models on diverse voice data
  • Evaluate speech recognition according to demographic and linguistic criteria
  • Perform fine-tuning on specific voices or various languages

Can it be enriched or improved?

Yes, this corpus is open to community contribution via the Common Voice platform. Annotations can be refined by additional validation and languages extended. Additional metadata can also be added to improve use cases.

🔎 In summary

Criterion Evaluation
🧩Ease of Use ⭐⭐⭐⭐☆ (complete metadata, requires handling of audio files)
🧼Cleaning Required ⭐⭐⭐⭐☆ (low to moderate depending on use, invalid clips separated)
🏷️Annotation Richness ⭐⭐⭐⭐☆ (validated transcriptions, demographic metadata)
📜Commercial License ✅ Yes (CC0)
👨‍💻Beginner Friendly 👨‍🎓 Yes, suitable for ASR projects with proper guidance
🔁Reusable for Fine-Tuning 🔥 Perfect for voice and accent adaptation
🌍Cultural Diversity 🌍 Wide variety of ages, genders, and accents

🧠 Recommended for

  • Speech recognition researchers
  • ASR developers
  • Multilingual projects

🔧 Compatible tools

  • Kaldi
  • ESPnet
  • Hugging Face Transformers
  • PyTorch
  • TensorFlow

💡 Tip

Select validated subassemblies for optimal and reliable training.

Frequently Asked Questions

What languages are covered by Common Voice?

Common Voice covers numerous languages and accents, with a strong presence of English, but also other languages depending on the contributions.

Are all audio files validated?

Only the files from the “valid” sets were validated by several auditors, guaranteeing the audio-text correspondence.

Can we contribute to this dataset?

Yes, Common Voice is an open community project where anyone can record and validate audio clips to enrich the corpus.

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