To set Hard of Hearing or Audio Description function
Accessibility
Audio commentary or subtitles are provided for those who are hard of hearing or visually impaired.

Hard of Hearing | This function is used for the hearing impaired. If it is set to on, the subtitle is displayed by default.
Audio Description | 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.