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Acknowledgements
Thank you to the following people and organizations who helped create this module:
Content developers:
Sarah Frost, Jean Louis Maagma, Tinashe Nhokwara.
Content contributors:
Lucy Norris.
Reviewers:
Patricia Castellanos de Muñoz, Carolina Der Mussa, Jigme Dorji, Caitlin Frisby, Sonam Jamtsho, Pema Rinchen, Rosario Urdanivia.
Illustration, graphics and media:
Julie Desnoulez, Ainsley Hadden.
Video participants:
Fine Chidodo, Jean Louis Maagma, Tichafa Rivon Mujuru, Tinashe Nhokwara.
Management of conflict of interest:
All contributors involved in the development of this module completed a Declaration of Interests form. WHO assessed these declarations and managed any potential conflicts of interest in accordance with its policies. Where a conflict was identified, appropriate measures were taken to ensure the integrity and independence of the process.
Source materials
World Health Organization (WHO), Assistive product specifications and how to use them, Geneva: World Health Organization; 2021. Licence: CC BY-NC-SA 3.0 IGO.
Further reading
American Speech-Language-Hearing Association (AHSA) Classroom Acoustics. Accessed August 2025.
Aussie deaf kids, All about FM. Accessed August 2025.