"Audio description"
Usually it's near the subtitles settings?
I believe it's the blue button on my Virgin media TiVo box' remote ^_^
Settings vary tv to tv, cable box/freeview/apple tv/satellite etc...
Possibly under "accessibility".
For a moment there I thought you have an artificial intelligence TV that's talking to you! ^)
Don't remind me of a customer once who wanted a plastic sheet for his TV screen, to prevent people from looking at him and talking to them in the middle of the night....>_>;