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Common Voice Contribute-a-thon

From:Fr 15-01-2021
Until:Fr 22-01-2021
Voice challenge
Voice challenge

Mozilla Common Voice is organizing a Voice Challenge between the Dutch and Frisian languages between 15 and 22 January 2021. The language that has more recordings and validations after one week wins.

You too can support the Dutch and Frisian languages and Mozilla Common Voice by recording and validating as many sentences as you can in this event, and win a cool event sticker in the process!

Live Opening event

On Friday 15 January at 3 PM (15:00 CET, 09:00 ET, 14:00 GMT) we will kick off the Contribute-a-thon with an opening event:

- Lecture 1: Josh Meyer (Common Voice Fellow)
Community activation for voice technology
- Lecture 2: Nanda Piersma (Hogeschool van Amsterdam)
Speech research of Dutch and the role of resources like Common Voice

Join the livestream on Mozilla
Join the livestream on YouTube

Live Closing event

On Friday 22 January at 3 PM (15:00 CET, 09:00 ET, 14:00 GMT) we will end the Contribute-a-thon week by organising a panel discussion:

Theme: Panel discussion on voice technology for minoritized languages


  • Dr. Esther Klabbers - Research Scientist at ReadSpeaker
  • Dr. Jelske Dijkstra - Researcher Voice Technology at University of Groningen (Campus Fryslân) and Fryske Akademy
  • Daan van Esch - Internationalization for Language Technology at Google


  • Dr. Matt Coler - Director of Voice Technology MSc. & Associate Professor of Language & Tech at University of Groningen (Campus Fryslân)
  • Tan Phat Do - Doctoral Researcher at University of Groningen (Campus Fryslân)

Join the livestream on Mozilla
Join the livestream on YouTube

Both events are free of charge, however we do ask you to reserve a ticket so we can send you the link to this online event via email.

Contribute-a-thon Challenge

Friday, January 15th, 2021 16:00 CET - Friday, January 22nd, 2021 16:00 CET

The challenge progress can be viewed in real-time at this dashboard!

Do you speak Dutch or Frisian? If so, you are invited to contribute your voice between 15 and 22 January '21! You can help us by recording yourself reading given sentences out loud and helping validating others' contributions (by listening to and judging others' recordings) in the open-source Common Voice dataset, which is very popular among the research community of voice/speech technology. Afterwards, by sending a screenshot of the Stats tab in your Common Voice profile (in which your username is also visible) to commonvoicechallenge, you can get a cool sticker from the event!

Common Voice, HvA and UG
The aim of the challenge is to collect as much audio as possible. The Challenge is organized by Mozilla, the Amsterdam University of Applied Sciences and the University of Groningen. Students from these two Dutch educational institutions research speech technology in the new MSc Voice Technology (UG) and devise and make innovative applications for speech in the Minor Conversational Interface (HvA).

You too can support the Dutch language and Mozilla Common Voice by recording Dutch sentences for at least 15 minutes a day on the Common Voice website for the next week.

Common Voice
Common Voice is part of Mozilla's initiative to help teach machines how real people speak. In addition to the Common Voice dataset, Mozilla is also building an open source speech recognition engine called Deep Speech. Both of these projects are part of our efforts to bridge the digital speech divide. Voice recognition technologies bring a human dimension to our devices, but developers need an enormous amount of voice data to build them. By donating your voice you're helping out developers and researchers all over the world. Together we can make voice recognition better for everyone!

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