36 CFR Part 1194 - Proposed Information and Communication Technology (ICT) Standards and Guidelines NPRM
412.1 General.
Where ICT displays or processes video with synchronized audio, ICT shall provide a mode of operation that plays associated audio description.
412.1.1 Digital Television Tuners.
Where audio description is played through digital television tuners, the tuners shall conform to ATSC A/53 Digital Television Standard, Part 5 (2010) (incorporated by reference in Chapter 1). Digital television tuners shall provide processing of audio description when encoded as a Visually Impaired (VI) associated audio service that is provided as a complete program mix containing audio description according to the ATSC A/53 standard.
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