To set Audio Description
[This feature is available in certain countries only.]

This function is for the blind, and provides explanatory audio describing the current situation in a TV programme in addition to the basic audio.
When Audio Description is selected On, basic audio and Audio Description are provided only for those programmes that have Audio Description included.
To set Hard of Hearing
[This feature is available in certain countries only.]

This function is used for the hearing impaired.
If Hard of Hearing is set to On, the Subtitles for Hard of Hearing takes priority and is turned on over the Normal Subtitle function.