International Digital Publishing Forum (formerly Open eBook Forum) DTBook. The DTBook establishes specifications for digital talking books (DTBs) for blind, visually impaired, physically handicapped, learning-disabled, or otherwise print-disabled readers.
[edit] Overview The purpose of DTBook is to ensure interoperability across service organizations and vendors providing content and playback systems to the target population. The standard provides specifications primarily for DTB files and their interrelationships.