Ergonomics. Accessible design. Spoken instructions of consumer products
11.180.15 - Aids for deaf and hearing impaired people
11.180.30 - Aids for blind or partially sighted people
13.180 - Ergonomics
EN ISO 24551:2019
This document specifies ergonomic requirements and
recommendations for consumer product spoken instructions that are
provided to guide users in the operation of a product and/or as a
means of providing feedback to users about the status/state of a
product. Such instructions can be used by persons with or without
visual impairments, and are useful for users who have difficulty
reading and/or cognitive impairments.
The applicability of the requirements and recommendations
described in this document does not depend on the language of the
instructions or whether the instructions are provided via recorded
human speech or synthesized speech from text.
The requirements and recommendations in this document are
applicable to conventional, stand-alone consumer products in
general, whose function is limited by characteristics that prevent
a user from attaching, installing or using assistive technology in
order to use the product. They are not applicable to machines and
equipment used for professional work.
This document does not apply to products for which the
instructional content and/or the means of presentation are
specified in other standards (e.g. medical devices, fire alarms).
It also does not provide recommendations or requirements for spoken
instructions of Interactive Voice Response (IVR) systems or digital
assistants on personal computers or similar devices.
ISO 9241-154 provides
recommendations or requirements for IVR systems.
This document does not specify voice sounds of text-to-speech
systems or narrative speech used in place of printed instruction
manuals and independently from the product.
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