The DELAD initiative


DELAD (=SHARED in Swedish) is an initiative  to establish a digital archive of disordered speech and share this with interested researchers.

DELAD was initiated by Martin Ball from Linköping’s University. In October 2015 and June 2016 two workshops were held in which selected researchers and data curation specialists discussed relevant issues in setting up such an archive, how to link the initiative to existing resource infrastructures such as CLARIN, and how to find funding to implement the archive.

This website has a number of objectives:

  • to raise awareness for the DELAD enterprise
  • to bring interested researchers together to promote the initaitive
  • to start an inventory of relevant data
  • to stimulate and facilitate the bilateral exchange of data


The archive will consist of a digital archive of sound files and video files representing samples of disordered speech, in a variety of languages. These sound and video files will be accompanied by high-fidelity transcripts, and acoustic analysis files together with imaging files (such as ultrasound imaging), as appropriate. At all times, the importance of developing ethical guidelines and appropriate permissions in the collection of data will be stressed.

The archive will be made available to researchers, as well as speech-language pathology educators and students. For researchers, the attraction of such an archive is the ability to refine analysis methods and formulate and test hypotheses about disordered speech without having to ‘reinvent the wheel’ in terms of primary data collection. For educators and students, an archive of high quality speech data allows them to learn and practise analysis of disordered speech and the application of diagnostic tools on a variety of cases. The ultimate goal of this research is the improvement of evidence-based therapy for developmental and acquired speech disorders, as well as the improvement of research opportunities.

Funded by CLARIN ERIC the DELAD community organised a workshop about these issues  in Cork, 15-17 Nov. 2017. A full report with video lectures can be found here.