According to World Health Organisation figures, hearing impairments affect more than 5% of the global population, around 360 million people.
Our Technical team is recommending that speech intelligibility be prioritised in multiple sectors, following successful implementation on buses in Norway. STIPA (Speech Transmission Index for Public Address systems) ensures that important information conveyed by PA systems is of an acceptable quality and accessible to everyone - especially passengers with reduced hearing capabilities.
Find out more about how this can be used across other sectors and how this fits in with universal design.
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