Published September 13, 2023 | Version 1.0.0
Dataset Open

COALA voice data and transcripts English

  • 1. BIBA - Bremer Institut für Produktion und Logistik GmbH
  • 2. Delft University of Technology
  • 3. Città Studi S.p.A.


This dataset contains audio files and transcripts in English and related to manufacturing. We collected the scripts during the Horizon Europe RIA COALA (GA 957296, project reference website) from industrial use cases and hired a service provider to generate the related audio files (BIBA - Bremer Institut für Produktion und Logistik GmbH ordered the service). The service provider checked the audio files for quality.

The service provider recruited crowd workers, and gathered their audio records, informed consent (privacy) and agreement that their records become public domain (Creative Commons 0; The service provider declared to follow a Crowd Code of Ethics and a Fair Pay policy.

The metadata file contains the following information:

  • file_name: name of the audio file
  • script: script the speaker had to speak
  • scriptId: the numeric identifier of the script
  • participantId: the numeric identifier of the participant (speaker)
  • gender: the gender as indicated by the participant (MALE or FEMALE)
  • age: the age in years as indicated by the participant
  • age_range: the age range in years  (18-30, 31-45, 46+)
  • country: the birth country indicated by the participant
  • current_country: the country of residence indicated by the participant
  • primary_language: the language indicated as primary by the participant
  • ever_worked_factory: answer to the question: "Have you ever worked in a factory, manufacturing setting?" (Yes/No)
  • years_worked_factory: answer to the question: "If yes, for how many years?" (1-10, 10+)
  • background_noise_type: background noise in the audio as indicated by the participant (mild, humming/technical, no noise)
  • gdpr_and_ipr_consent: answer to the privacy notice and the ipr transfer to CC-0 (Yes)
  • date_signed: date when the participant signed the consent form (US format, MM.DD.YYYY)


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Additional details


COALA – COgnitive Assisted agile manufacturing for a LAbor force supported by trustworthy Artificial Intelligence 957296
European Commission