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Assistive Technology for Visually Impaired and Blind People

by Marion A. Hersh Michael A. Johnson

Equal accessibility to public places and services is now required by law in many countries. In the case of the vision-impaired, it is often the use of specialised technology which can provide them with a fuller enjoyment of all the facilities of society from large scale meetings and public entertainments to the more personal level of reading a book or making music. In this volume the engineering and design principles and techniques used in assistive technology for blind and vision-impaired people are explained. Features:· instruction in the physiology of the human visual system and methods of measuring visual ability;· explanation of many devices designed for every-day living in terms of generic electrical engineering principles;· sections of practical projects and investigations which will give the reader ideas for student work and for self teaching;· contributions by authors of international repute from divers fields which co-operate under the banner of assistive technology, among them: artificial vision systems; psychology, haptics, electrical engineering, design and visual physiology. Assistive Technology for Vision-impaired and Blind People is an an effective means of maintaining the currency of knowledge for engineers and health workers working to provide devices and/or services for people with sight loss and an excellent source of reference for students working in assistive technology and rehabilitation.

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Select your format based upon: 1) how you want to read your book, and 2) compatibility with your reading tool. To learn more about using Bookshare with your device, visit the "Using Bookshare" page in the Help Center.

Here is an overview of the specialized formats that Bookshare offers its members with links that go to the Help Center for more information.

  • Bookshare Web Reader - a customized reading tool for Bookshare members offering all the features of DAISY with a single click of the "Read Now" link.
  • DAISY (Digital Accessible Information System) - a digital book file format. DAISY books from Bookshare are DAISY 3.0 text files that work with just about every type of access technology that reads text. Books that contain images will have the download option of ‘DAISY Text with Images’.
  • BRF (Braille Refreshable Format) - digital Braille for use with refreshable Braille devices and Braille embossers.
  • MP3 (Mpeg audio layer 3) - Provides audio only with no text. These books are created with a text-to-speech engine and spoken by Kendra, a high quality synthetic voice from Ivona. Any device that supports MP3 playback is compatible.
  • DAISY Audio - Similar to the Daisy 3.0 option above; however, this option uses MP3 files created with our text-to-speech engine that utilizes Ivona's Kendra voice. This format will work with Daisy Audio compatible players such as Victor Reader Stream and Read2Go.